aka bag hooks, aka curry hooks!
If you have a 2020 or later Model 3, then your car arrived without the hooks (that double as bolt covers) in the frunk. Hooks are handy, plus, if you do get curry to take-out, what better place to hang it than in the frunk, where all the wonderful smells stay out of the car! They're compatible with any Model 3 of course, but older Model 3's should already have them.
Supplied as a pair, with a small wrench to remove the bolt, these are easy to fit, simply remove the bolt, insert the hook ,and re-tighten the bolt. There's no need to over do it, hand-tight is fine, and do note that the hooks are supplied as a left/right set, so each one only fits in one of the openings.