3M VHB Heavy Duty Mounting Tape
This is a PERMANENT tape product that replaces rivets or screws.
I have a 2003 B2300 Mazda standard cab pickup. So there is very little room behing the bench seat but I hate having 'stuff" on the floor of the cab.
So I bought a Toyota Cargo Net and two steel hooks from Home Depot and mounted the net behind the seat. Now all of my stuff resides in the net instead of on the floor.
I used 3M VHB tape to hold the metal hooks to the plastic side trim. The net has all kinds of stuff in it including a couple of master locks, gloves and other things. Those hooks are permanently bonded unless I scrape them free.
Here's a video on the 3M product: