Casascius coins {Physical coins} are not practical. One of the most beneficial and practical aspects of Bitcoin is the fact that
you can send bitcoins to anyone in the world, within a few minutes at a very low fee. You can also send ANY amount. If you
have to deal with physical coins, then you will nullify that advantage that Bitcoin has over physical coins. {Also called Fiat}
Bitcoin was created to be better than Fiat currencies, not to copy cat them.