The easiest thing to buy someone for their birthday? BOOZE. Now you can give a card to go along with that booze. The Shot Glass Card ($5) The best part? There is an origami shot glass built into the card! Just pop out the flat stock paper and follow the origami instructions and BAM you have a paper shot glass. WARNING! You can probably only use it a few times before it starts to leak all over you. Still pretty sweet though.