Provide a tray of a dozen assorted small potted plants or flowers. Set the tray near the door when the kids begin to leave and let the child pick which plant they'd like to take home. Easy plants for kids to grow are succulents or cactus, because they don't require much water. Easy flowers to grow are sunflowers or geraniums. You can link the plant to the party's theme by having each of the kids decorate a small plant pot during the party, and then give them the plant on the way out the door.Collect a bunch of inexpensive toys from the toy store or dollar store; each toy should be less than £3. Wrap them and put them in a pillowcase. When the kids are leaving, have them put their hand in the pillowcase and choose toy at random to take home. It's best to pick toys that are unisex, such as paints, card games, skipping ropes, chalk, bath toys and puzzles. If you'd rather buy gender specific toys, simply separate the boys' and girls' gifts into two different pillowcases.