In one sentence, describe what the following article is about: A coccyx cushion (sometimes called a wedge cushion) is a U-or V-shaped pillow that protects the coccyx from uncomfortable pressure. Some cushions are also formed as a wedge. The U- or V-shape, in comparison with the circular doughnut cushions, often provide more comfort for people with tailbone pain. These cushions can also be used to provide comfort for those with hemorrhoids (piles) pain, prostate disorders, pilonidal cysts or degenerative bone disease. Doctors frequently recommend that patients use a coccyx cushion after back surgery to reduce pressure on the spinal column and tailbone. Coccyx cushions are also often used to help relieve pain from other chronic pain conditions and inflammatory pain or to relieve pressure on the back and pelvic area during pregnancy. Coccyx cushions differ from ring or doughnut cushions, which have a hole in the middle, and help reduce pressure on the anal and prostate region in cases of hemorrhoids and swollen prostate. You can buy a coccyx cushion at a local surgical supply store or pharmacy. You can also search online using terms like "coccyx cushion", "tailbone cushion" and "tailbone wedge cushion". Online sources can be less expensive, but the advantage to using a local dealer is that you can try different cushions to see which might work best for you. Do some research in advance. There are multiple things to consider when buying a coccyx cushion. Some are softer and thicker than others, some are inflatable, and others have washable covers. There are also cushions using different materials as padding and some may be more comfortable for you than others. Some of the materials used are memory foams, gels, semi-liquid gels, or other materials. Talk to your physician or orthopedic specialist to see if they have specific recommendations. If you cannot find a comfortable option in stores, then you can try making your own coccyx cushion. Most coccyx cushions are just regular cushions with a small opening on one side. You can get a large piece of memory foam or a memory foam pillow and cut out a small wedge on one side. Other creative options include duct taping together segments of a pool noodle, using a neck pillow, or filling a long sock with rice and bending it into a "U" shape. Coccyx cushions are made in varying levels of thickness and firmness and it's important that you select a coccyx cushion that's comfortable for you. Squeeze the cushion in your hand to feel how firm it is. This will give you an idea of how it will feel to sit on the cushion and how much support it will give you. Coccyx cushions are also made with gel inserts. Gel inserts can help provide a softer form of cushioning and will conform better to the particular contours of your body. Some gel inserts in coccyx cushions can be removed to be warmed or frozen for hot or cold therapy. Some coccyx cushions are U-shaped and have a cut-out area to help relieve pressure on the spine and tailbone. Many people find more relief with these cushions, so try the solid ring cushions and the cut-out version to determine which kind is better for your needs. Coccyx cushions can be anywhere from 3 to 7 inches (7.6 to 17.8cm) thick. Most people use the 3-inch thickness, but a thicker cushion can be beneficial to heavier users. Ask your physician or the local dealer about what size thickness is ideal for you, given your particular body type.
Summary: Know what a coccyx cushion is and does. Buy a coccyx cushion. Consider making your own coccyx cushion. Choose a cushion that feels comfortable. Try coccyx cushions with and without the cut-out. Make sure your coccyx cushion is the appropriate thickness.

Most flags are either rectangular or square. Your flag doesn't have to be rectangular, but you should stick to simple shapes that are easy to see from a distance. For example, Nepal's flag is made of two overlapping triangles. Consider what you will be using your flag for. A triangle will work well for a pennant flat, while a rectangle will work for a sports flag. In general, rectangles are the easiest shape to work with because they give you the most space to create your design on. Some of the most common flag designs are bicolors, tricolors, and quarters, or use stripes, panels, and borders. The flag can also be a solid color with a unique symbol in the center. Alternatively, you can place a rectangle in the upper left hand corner called a canton (like on the American flag) that includes a symbol. You could create a symmetrical flag, like Japan's flag, or an asymmetrical flag, like Norway's flag. Look at flags for other countries and sports teams to get ideas. If you really want a detailed flag, take a look at some of the state and community flags. As a general rule, you should only use 2 to 3 colors in your flag design. If you use more they can be hard to distinguish. The most common colors found on flags are black, blue, green, red, white, and yellow. You can use light and dark colors to create contrast. You do not need to stick to the most popular colors. Instead, choose a color that symbolizes the place or organization your flag represents. Avoid colors that are too similar to each other, such as red and orange or navy and dark purple. They won't stand out as well.
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One-sentence summary -- Choose the shape for your flag. Choose a simple design. Use 2 to 3 colors.

Problem: Article: Cover the surface that you will be working on with a drop cloth, newspaper, or cheap tablecloth. If there is anything near by that could get stained, move it out of the way or cover it up with a drop cloth or cheap tablecloth. It would be a good idea to wear some old clothing or a work apron as well. If you will be working with spray paint or oil-based paint, open up some windows to ensure good ventilation. This includes things like knobs, hinges, and metal plates. Place everything into labeled zippered bags or containers. Skip this step if you are working on a craft item with nailed or glued hardware. Removing this type of hardware will do more damage than good. This includes nailed or glued hardware that you could not remove on craft items. Run your fingernail or a burnishing tool across the tape to ensure a tight seal. If you don't have a tight seal, the paint can seep under the tape and give you a blurred line. It is best to use painter's tape as opposed to masking tape because painter's tape is less sticky. Masking tape is more likely to mar the surface or leave behind hard-to-clean residue. Start with a sanding block to smooth away any imperfections, then move on to sandpaper. If you are working with a rough surface, start with 60- to 80-grit sandpaper, then move onto a finer grit once the surface is evenly sanded. If you are working with a smoother surface, start with 120-grit sandpaper and move to 220-grit. Wipe the surface with a tack cloth, then clean it with warm, soapy water. Scrub any stubborn areas with an old toothbrush or manicure brush. Rinse the surface with fresh water, then let it dry completely. If the item you are painting is made from plastic, wipe it down with rubbing alcohol after you wash it with soap and water. Let the item air dry after you wipe it with rubbing alcohol.
Summary:
Protect your workspace against stains. Remove all hardware, if needed. Cover anything that you do not want painted with painter's tape. Sand the surface smooth. Clean the surface to remove any sanding dust and previous grime.