Obviously, you can use whatever fruit floats your boat, but pineapple, strawberries, grapes and blueberries are our favorites.
Fresh pineapple is totally worth a few extra minutes to cut up. Here's my (probably incorrect) method of getting to the goodness:
Lop off the head.
Then shave off the sides.
Then cut the strawberries into quarters and add them to the mix.
Stir the honey and lemon together until completely combined, then pour over your fruit and gently mix it all together.