Credit goes to Desmothing in his original design linked here
https://www.thingiverse.com/thing:5364327

I added holes in the Wall-Piece so it can now be mounted with nails or screws instead of command strips.

I found the command strip not working well and my lego Boba Fett ended up falling and shattering all over my room (sad days). The base was all that remained intact. The drawing I did on my phone is a temporary replacement. But on the bright side, this design is a lot more stable and reliable now.

Also turns out that this can also fit the lego infinity gauntlet as well as the lego nano gauntlet. Pretty much any lego set with a 3.15" x 3.15" base. Desmothing also has a special base for the lego Tie-Fighter in the thing I linked.

Check the print notes for print info and settings

Installation
1- Start with the Wall-Piece and make sure the shorter side is on the wall. Hammer in two nails/screw in two screws, starting from the top hole, at about a 45-degree angle or more. Hammering it in straight in will just pull the nails right out of the wall. I haven't tried it with screws yet but I'm sure it would just be better to do it at an angle anyways.

2- Take the Arm and start by placing it slightly above the wall piece and pull it down until it is secure. If you hammered the Wall-Piece in too much, the Arm will not slide in properly, to fix this you can simply pry the top of the Wall-Piece out little by little until the Arm is secure. With screws, you can unscrew the top screw little by little until the Arm is secure. Check that it is secure by applying various amounts of pressure (don't break your drywall testing it lol).

3- Place the Base in the hole of the Arm, with the name tag slot facing outward.

4- Now it's ready for your lego sets. If it seems unbalanced, it can be rotated on two different axes to maximize stability.