So the Hulk hands idea is super old and forgot who I originally first saw make them (but remember it was on a Deadpool lol), but I found a perfect Legends scale set of hands that are also cheap. I used the Marvel Avengers Titan Hero Series Blast Gear Deluxe Hulk Action Figure
from Target which is like $13. Had the Rex figure for one of the Fortnite guys I regularly use and his pick ax tool are Hulk hands so that was my motivation! Hope the cheap tip helps. Also I didn't remove the base figure hands so they would fit better or dremel them out a bit more.