You don't have to wait for Girl Scout cookies once a year. Make Thin Mints at home with this recipe:

1 box Devil's Food Cake Mix
2 Eggs
2 Tbl. Water
2 Tbl. Cooking Oil
1/2 Cup Cocoa
1 pkg. Chocolate Chips
2-3 drops Wilton's Candy Mint Flavoring

Preheat oven to 400 degrees. Combine cake mix, eggs, water, cooking oil,
and cocoa. You will need to blend this together well, this will be a
very sticky mess. Let stand for 20 minutes, and then shape into very
small 1/2 inch balls. Place these balls on a cookie sheet 2 inches a part,
and smash down flat. You will need to spray a large spoon with Pam to
make them flat. Bake for about 8 minutes. Let cool until they reach
room temperature.