Cut fruit up and make it into a salad. Prepare different types of fruit, put it on plates and ask your children to guess which is which. Another good thing it to make smoothies and milkshakes a reward.
I can get my son to try different fruit when we have some melted chocolate to dip it into.
Make a fruit salad, with all sorts of fruit in it, dish it up as normal and squirt some cream on it.
Make a banana split with a banana cut in half lengthwise, two scoops of ice cream, sprinkles and little bits of fruit.
Alternatively, just try the really sweet fruits like mango, nectarine and strawberries. It'll satisfy their sweet tooth and be healthy.
Get your children in the kitchen with you and when you've cut up lots of fruit, let them arrange it in funny faces or patterns of their choice on a plate. Try having a colour day. Tell your children you will only eat red vegetables and fruit on a certain day and see what they come up with.