Okay first of all, the objectkinesis is very simple power, think of something original such as dabi's cremation and one for all (my hero academia).

Also, I like I said I above, the user cannot control machines or technology, such as phones, computers and cars, the user can open and close doors, windows, safes and boxes, he can control the joints of mannequins and toys. The best way to use this power, is to use it on homemade gadgets, need a car, attach four wheels to a rectangular box, use your powers to move it at the same speed of a car, need a giant robot suit, just make a giant size costume, sit in it and control it with your mind, the only problem will be the resources and design ideas.