I was looking for a good solution to ensure that the amiibo stand neatly and at the same distance on the acrylic stand. Because I couldn't find anything to buy, I made it myself. The circle is a few mm larger than the amiibo stand, but that's not so noticeable when you're standing in front of it.

It can be pushed back and forth on the board without any problems, but is still so firm that it does not slip

The stl model consists of 2 halves , one half is:

L    153mm

W    54mm

H       7mm

both merged:

L     300mm

W     54mm

H        7mm

printing time 

for one half:25m20s

Full: 50m41s

required filament:3g for one half and 6g for both

printed with Sovol SV06 & Sunlu PLA white