We have blueberries that were growing here before we moved in. I was gonna post a picture of a bee interacting with a blueberry blossom, but I never could catch the shot. - the blueberry blossom looks a little like a glass lampshade, where it gets narrow at the opening. The bumblebees have to set the blueberry up for the honeybees. The flower's about 1/3 of an inch and the bumble cuts a slit in the base of about 1/8", then the bee hunts around for the cut and pokes her way in through there - If I think of it I'll try to catch a picture this year.
as to your request - we just planted a self pollinating plum this year - I didn't see the bees working it, but that doesn't really mean they weren't (our peach trees are self pollinating, but the bees still get all over them.)