Since I can't think of anything, I sought help, and this was the answer from someone smarter than me.
A floating grand piano: To play epic melodies while floating over the sea, attracting curious mermaids.
An infinite taco vending machine: Programmed to offer tacos of every imaginable flavor, I'd never get bored!
A drone with a holographic projector: To project movies onto the clouds and simulate intergalactic parties under the stars.