We installed some under staris pull outs but the coat sleeves kept getting caught in the door. I remember seeing something like this in a camper van, so took an old 6mm diameter bungee/shock cord, cut it in half, and designed this bracket.

The bracket is printed in two pieces, so that each can be as strong as possible, then they just slot into each other. You thread the elastic cord through the bracket, fold it over and tape it or bind it with some thread and stuff it back into the whole, it's tight enough that the bend can't undo. Then screw it in.

I also made a little spacer because my screws were too deep for the cabinet, so the spacer just used up some of that length.