You may want to use a plastic storage bag, a piece of tupperware, or even a cup. Choose an item that will either cover up your credit card number or is thick enough that the number will not be visible through the ice. If the number is visible through the ice, then you may be tempted to use the card number for online shopping. You could also cover the number with a paper towel or a small rag before freezing, but remember that it will be submerged in water. If you have a chip card, freezing it should not damage the chip. Your card needs to be completely covered in water so that once it freezes it will be covered in ice. If your container has a seal, such as plastic storage bag, close it once you've added the water. It may take several hours or even a day to freeze solid. Once it's frozen, you'll need to keep it in the freezer. Usually, you'll want to leave it in its container. However, you may be able to pop the ice block out of a plastic container if you need the use the container for something else. This would be similar to popping ice cubes out of a tray.
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One-sentence summary -- Place the card in a freezer-safe container. Fill the container with water, covering the card. Place the container into the freezer and let it freeze solid.

Because birds have developed various senses to keep them safe from danger, you can scare small fowls away from your roof by using statues that mimic their natural predators. Look for the following decoys at garden or farming supply stores: Owl decoys, great for pigeons, crows, seagulls, and sparrows. Raven decoys, great for magpies and other small birds. Falcon decoys, great for pigeons, turtle doves, and songbirds. Similar to predator decoys, you can scare birds away from your roof by purchasing loud, sonic speaker systems that play pre-recorded predator noises and distress calls. Look for systems featuring sound effects specific to the bird you're trying to get rid of. If you don't want to disturb your neighbors, try getting an ultrasonic repellent. These devices play high frequency sounds that annoy and disorient birds without affecting humans. These devices are designed specifically for birds and should not annoy dogs, cats, and other pets. Look for sound-based bird repellents from pest control companies. For birds that aren't convinced by your decoys, try placing a strip of avian-specific, low-voltage electric diodes along the areas they normally sit. Even if they can perch in a spot a few feet over, the shocks will make the birds avoid the area altogether. These strips are typically available from companies specializing in pest control. Though unpleasant, the shocks emitted by the electricity strips are not enough to harm the birds.
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One-sentence summary -- Place fake predators on your roof to scare birds off. Play sounds made by predator animals to keep birds away. Blast ultrasonic frequencies for a silent deterrent. Install electric pads over perching spots to teach birds not to land there.

As a rider, your goal is to stay on the horse. However, at some point when you've run into trouble on your horse, you have to decide that you're falling and commit to it. If you feel like your horse is going down, you need to get off it. That means dropping the reins and preparing to tuck and roll so that you can fall safely. As you decide you're going to fall, kick your feet out of the stirrups to start getting away from the horse. If you hold onto the reins as you fall, you may hurt your shoulder or be dragged along the ground. If your horse is falling to one side or the other, move your body the opposite way. Use the place between the horse's shoulder blades to push off with your knuckles. Move upwards, and bring your knee and heel up on the side where the horse is going down. Pull your heel up to your rear if possible so that it doesn't go under the horse. When the horse gets to the ground, use your tuck and roll technique to move away from the horse. Go as far and as fast as possible away from the horse. Even though you're going to tuck and roll, your goal is to land as much on your feet as possible, then go forward into the roll. It's not always possible to go feet first but take the opportunity when you can. Try to relax your body as you fall. Tensing up your muscles will severely limit your body's ability to absorb impact. It may take many falls to learn this habit, but you'll likely have less painful falls when you do. As you fall, pull in your limbs to protect them from the fall. If you put your arms out to break your fall, you may end up with fractures in your wrists and arms. At this point, hopefully your muscle memory will take over and help you keep rolling. As you tuck, try to roll onto the back of your shoulder, then your back. Keep rolling until you're back to your front again. You may need to roll again to get away from the horse. If you don't land feet first, try to take the brunt of the fall on your thigh or the back of your shoulder. Do your best to avoid landing on your neck or straight on your back.
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One-sentence summary --
Decide to fall off when you need to. Push out away from the direction your horse is falling. Land on your feet if possible. Relax your muscles. Tuck your body as much as you can. Take the brunt of the weight in the roll.