I took a used green bean can, cleaned it out really good, and took the label off. Luckily my can opener cuts underneath the rim so it's a clean, smooth cut. I glued that back on. I then took a knife and cut a slit in the top of the can. Then, I spray painted it and put a sticker on it to give it a cool look to it.
I have an old beer can I keep in my Med cabinet I put my blades into. After 5 years , between my wife and I it is about a third full. When it is full I will put it into recycling container and start a new can.