My original door wedge (https://www.myminifactory.com/object/3d-print-typical-door-wedge-96085) worked pretty well. Rarely a slippage, and when it did happen it slipped back an in or so.
This isn't meant to replace my previous model, but it's more of an enhancement.
With a standard door wedge, you have to bend over and slide it under the door; (Or kick the thing in; cuz that's fun...) and when you want the door opened only a little bit, you have to bend back over and change it. In short, if your back is aching, this sucks donkey d*ck.
This design can be used like a standard door wedge, but with an extra feature. This can ride on top of the door and be adjusted simply by sliding it towards or away from the door hinge.
Sliding it against the door hinge helps keep the door wide open, while at it's furthest, it'll hold the door open slightly in case you have a cat that likes to constantly ruin your life... by scratching at your closed door. Also with the Top Door Wedge, when you wish to leave the room, you can keep it in place for when you wish to use it again.