This is a wall mount that is designed to go behind the door and store collapsible crates out of the way using the handle hole while the crate is folded flat. We use ours in our laundry room to wrangle our collapsible crates that we use as laundry baskets. We use “CleverMade” collapsible crates but they look to be standard design and other models should work just as well. 

These can be attached either with double sided tape or screws/anchors. 

FreeCAD file is included if you need to make adjustments to fit a different style crate.