Save you change, they are more useful then you think!
Also you can use a bigger can like lipton ice tea one :p
Take the xacto knife and cut the hole for the coins, you can mesure this with the bigest coin you have.
Get you favorite magazine, cut images you love.
Let it dry.
Over night if you want, but does dry pretty quick.
Depending on how many glue you put on it.
After it dry, clean up all the corner with you xacto knife.
Place packing tape over it, this will add shine and protects the images.
Reapeat step # 5
To make it all neat and clean.
You are done!