"I Wish I Could Be Useful To My Dad! He Loves Camping And Hunting!" Jeff blurted out having already decided he wanted to start with making his family's lives better. After all, he could always just conjure another genie after using this one's 6 wishes or use the Chronivac to make the changes despite it being more complicated than stating a wish.
The Genie stared dumbfounded, "You... What? Wait. No, no, no, no, no." In a flourish, Jeff's mouth sealed keeping Jeff from being able to interject or ramble and bound him to the computer chair so he couldn't move.
"You wish you COULD be USEFUL to your dad? Not, you wish you WERE MORE useful to him. Not, you wish you were a more capable human so you could be useful to him... Jeff, I feel like you're testing me. Turning you into a bottle opener or a phone charger COULD be useful to him. A hunting knife or paracord would work assuming you intended for that to be part of the wish, but just to be clear, it wasn't and I'm not bound to make any hunting or camping connection."
Jeff's eyes widened in terror as he began to realize how much leeway he just gave this being over his existence.
"Wishes like this are so frustrating because I can't possibly know what you were even hoping to get out of it, let alone, how to add my own personal touch to make it a little more fun. I could make you a stag, and in three years once he gets lost in the wilderness on a hunting trip, he could shoot you and you would be the food source that keeps him alive long enough to find civilization again. Useful indeed... but even just a hunting dog to be a companion."
Jeff was on the verge of tears listening to this.
"If I were to leave you human, I could make you perfectly obedient to him, or a slave that would anticipate his needs? You would be mowing the lawn right now if that were your fate. Perhaps his twin so he could go camping any time he wants and leave you in his place to take over his mundane life? His coworker to cover his work while he goes camping? Remove you from the family and turn you into his hunting and drinking buddy? I could even make you much better than him as a twist to offset your usefulness. Hmm, Come to think of it, you'd probably love any of these options, look at you crying tears of joy."
The genie faced Jeff, "Well, you certainly stopped me from being able to misinterpret your wish, but you did it by making your wish so vague its practically uninterpretable and anything works. I have to do something, so here goes!"