My son made the Lego set “Hokusai - The Great Wave”, a re-imagining of Hokusai's iconic artwork:
https://www.lego.com/en-au/product/hokusai-the-great-wave-31208
We wanted to put it up on the wall, so I made these simple hooks that will work with 3M Commander Strips (or similar).
Print out the four hooks (no supports needed) and place them in the back/top of the finished Lego set in the positions shown in the photos. You should find that the spikes (pointing upward) slot into the holes of the Lego Technic sticks making up the the frame
With the Command Strips backing pulled off, push the frame gently but firmly onto the wall where you want it to go, and then lift the frame off by (careful) pulling the bottom outward and lifting the frame up.
Give the Command Strips the recommended time to stick properly to the wall, and then place the frame back on the wall using the reverse motion to lifting it off.
Possibly they will work with other such Lego sets like…
…but I haven't tested with them. I assume that the frame construction is probably the same, so if you try it and it works, let me know.
The author marked this model as their own original creation.