Bring your toothbrush, toothpaste, floss and deodorant for sure. If you'll be wearing makeup, bring along some makeup wipes and your normal facial cleanser. Ask your hotel if they provide shampoo, conditioner and soap, or, if you're staying with a friend, ask to borrow some of theirs. If your travel time is short, save space in your bag by styling your hair and putting on makeup before you head out. Bring only what you need to touch up, like a bit of styling mousse or some lipstick. Big bottles of shampoo, hair straighteners and blow dryers will take up lots of room in your bag, so leave them behind if you can. Call your hotel and ask if blow dryers are included in rooms, or, if you're staying with a friend, ask if they own a straightener or curling iron you can use. Transfer liquid products into smaller containers to avoid bringing large bottles. Use an extra makeup bag or plastic bag to avoid losing phone chargers, headphones or keys. Keep cords from tangling by rolling each one into a circle or oval, then clipping it together with a binder clip. Grab a book or a lightweight tablet if you'll be traveling for a while, or charge up your phone to play games or music. Grab a thin book of crossword puzzles, sudoku or word searches for boredom-banishing activities you can take on the go.

Summary: Include only toiletry must-haves. Do your hair and makeup before you leave. Avoid packing larger beauty items. Tuck away other small items in a separate bag. Bring activities if you'll be on a plane or in a car for a long time.

Hold the paper with both hands so you have a hand on each side of the crease you're looking at. Remember, mountain folding is where you fold away from you. Once you've made 4 mountain folds 1 along each side of the square press the left and right sides of the square together to flatten the paper. When you press the left and right sides together, the square should fold in on itself so it's tucked inside of the flattened paper. If it doesn't, help it along by pressing down on the center of it with your finger.

Summary: Turn the paper so you're facing the crease from the last fold. Mountain-fold the sides of the square and then press them together.

Press-in wire hooks are designed to be inserted into drywall without hammers or any other tools. These wire hooks are sometimes known by their brand names, like Monkey hooks or Gorilla hooks. Make a small pencil mark where you will insert the hook. With press-in wire hooks, the hanger will be approximately 2 centimetres (0.79in) lower than your hole. Measure the length of the slack if the item you are hanging has a wire on the back of it. Pull the center of the wire up, then measure the distance from the bottom of the object to the top of the wire. Line the hook up with your mark and press it firmly into the wall. The entire wire except for the little hook on the end should go into the wall. Twist the wire so that the hook is facing up. Finish by placing the object you are hanging on the hook using the wire or hanging hardware on the back. You may have to pull the hook out from the wall a little or press it in further, depending on the item you are hanging.

Summary: Choose a press-in wire hook for items weighing up to 50 pounds (23kg). Determine where on your wall you want to hang your object. Push the long, tapered end of the hook through your drywall. Hang your item.

You do not need to fill the flask. The less water you add, the faster you will be able to bring it to a boil. However, make sure that you do add enough water so that you don't boil it off too quickly. About 75 mL should do nicely. This will serve as a heat source for your water. Make sure you heat the water to the boiling point. This will force air to expand out of the top of the flask and also generate water vapor to fill the balloon. Remember that the flask is being heated. You should use gloves to avoid burning your hands as you secure the balloon over the opening of the flask. Make sure that the balloon is far enough down on the neck of the flask that it does not pop off easily. It may be easier and safer to put the balloon on the flask before heating the water. Securing the balloon over the top of the flask will create a seal and only allow the air to expand into the balloon. This expansion of air into the balloon will cause the balloon itself to expand. Do not let the balloon get so large that it pops. To prepare the ice bath just put water and ice into a container. This is a very easy and fast way to cool the contents of the flask. Use gloves to transfer the flask from the heat source to the ice bath. The rapid cooling of the gas inside of the flask and balloon will cause the volume of the gas to decrease. As the volume decreases, the volume of the balloon will also decrease, causing it to shrink. As the gas cools even more and contracts even more, the volume of the gas shrinks so much that the pressure outside the flask pushes the balloon completely inside the flask.
Summary: Add a small amount of water to an Erlenmeyer flask. Place the flask on a hot plate or burner. Put the open end of a balloon over the opening of the flask. Observe the expansion of the balloon. Move the flask to an ice bath. Observe the suction on the balloon.