full nasty secretly cursed radical boons of power

Levitation: So about that levitating a foot off of the ground; you can't actually go lower than that, ever. Even when you're asleep, you'll be like floating above the bed. It can also be a problem getting through doors too. Have fun!

The cookbook: You have to eat every last bite of whatever the cookbook produces and you cannot share with anyone without being a part of the meal. So you can feed a friend but you also need your own portion. In addition to that, roughly 1 in 20 meals made by the cookbook will have their tastes inverted with the negative versions being as awful as the regular versions are good. Blech!

The advisor: The advisor is actually a magical talking sock puppet that only you can hear. If anyone asks how you learned how to do x or who gave you such radical tips, the sock puppet will expect to be credited and will be offended if you deny it on the grounds that you'd sound like a loonie. It also has a kinda grating voice!

Music spirit: So whenever you start singing and dancing you can't stop until the song is over and the whole world becomes also gets involved in the typical musical style impromptu dance numbers. People won't ever be put in life threatening danger because of this - surgeons will be able to operate just as efficiently as if they weren't boogieing down etc - but people may not appreciate having to dance and sing. Also, the backing music isn't guaranteed to be as good as your singing and sick moves.