These Speks 2.5mm magnet balls are super easy to use. You can just roll them around in your hands to relieve stress. You can also use them to create different shapes on your desk for a bit of fun. Keep them in a small box or a pouch when not in use to avoid losing them. Remember, these are not for kids. Make sure to always keep them away from children. Never put them in your nose or mouth. If you accidentally swallow one, go to the doctor immediately. Also, try to keep them dry to prevent any rusting. Just enjoy playing with them and let the stress melt away.