Gather at the Mall and give each guest $5.00.  They must purchase items of different category's and at different stores. One item per store only. One item per category. Sample of purchases would be something to wear(jewelry), something to eat, something to read, or something to smell. They must keep and tally all their receipts. The winner would be the fastest shopper, the bargain shopper, the shopper with the most items, and the shopper to you drop. Also you can do a scavenger hunt to find the best price on a small coke, best price of nail polish, best price on a meal. Most unusual hat.  etc the list can go on and on.  Fun for teenage girls!!