At this point, you can get single melon, triple melons and gold melon from item boxes when you’re playing in singleplayer.
Though is it possible to make it so only be able to get a specific melon (preferably triple melons) in singleplayer? As someone who plays single for time trial, I’d prefer item’s randomness doesn’t affect to record.
(I think the best would be you can manually set which melon you will get from each box, but I also feel like it’s too much to ask.)