B.A.
Yes, dollar store is good for stickers.
I was also thinking of temporary tattoos. Perhaps chuckee cheese tokens if that is in the area. Perhaps some kind of Coupon for a Wendy's frosty/McDonalds ice cream cone? We have 7-elevens here in Michigan that do slurpee coupons not sure what you have in your area that may have something like that if you don't have a 7-eleven there.