The Best Scavenger Hunt I've Ever Made

You need:
Paper
A Pen
A favorite (or least favorite) coffee shop

Instructions:

Go to the above mentioned coffee shop. Make up a scavenger hunt. Start by leaving a card explaining that this is a scavenger hunt and leave it relatively obvious place. Probably not right out in the open, but somewhere people check often. Random drawers in furniture works well for this. Also write a clue (puns, rhymes, etc make it a lot more fun than saying "the next clue is under the table." Draw some pictures if you can draw, people like pictures.) Go on like this as long as you want, and try your best to leave them in more and more obscure places, to reduce the risk of someone starting your scavenger hunt halfway through.

The very last card should say "Congratulations! You've completed our scavenger hunt! Please give this coupon to the barista in exchange for a free small espresso drink!" Sign it "-The BLAHBLAHCOFFEESHOP Management"