5- Floating gumballs in the potty would make for good 'target practice' for your toddler.
4- Slightly melt taffies, and tell grandma it's a tastier replacement for her Polygrip.
3- Feed the chewiest candies to your neighbour's yappy dog. He'll stop barking for hours.
2- Hard candy would make great sling-shot amo, keeping pesky squirrels out of your garden.
1- Tie a few candies to your hamster's wheel, then watch the little furball try to get them.