The Stack Overflow Keyboard as sold by Drop dot com includes two RGB LEDs on the underside of the PCB, but all light is blocked by a full aluminum enclosure. 

This part replaces the bottom cover, which will let light through and diffuse around the 2mm riser integrated into the new part - provided you use a translucent filament or resin. 

I printed mine with Giantarm clear PLA
0.24mm layer height
3  top layers
2 bottom layers
15% infill, pattern = "lines"
On an Ender3 V2

Hardware:
4x 6mm M2 screws
Or modify the model yourself to allow the original countersunk screws to fit. 
4x self-adhesive bumper pads or reuse the original feet that came with the macropad.

The Stack Overflow Keyboard RGB LED Riser

theKeyMacropad_2mm riser.stl

Used to hold an airtag centered axially in a drill to apply a brushed finish to the stainless steel battery cap. This finish wears much nicer than the polished& etched original surface, and is easy to touch up if desired. 80 grit sandpaper worked great for my liking, but adjust depending on your personal preference. 

The second part is used as an ejector to remove the airtag by pressing on the back side without marring the plastic face of the airtag. You may be able to use a hex key or similar if you don't mind marring the plastic of the airtag.
This is version 0.2, works well enough but could use some tweaking that I may or may not get around to.

Filament used: Polymaker Polyterra PLA matte blue

Airtag Chuck for Drill

revised airtag chuck.stl

Onewheel XR charge port plug holder. 
I received something similar from onestopboardshop when I ordered silicone xlr port plugs. Nice freebie to throw in with the order, but it "clips" on to the charge cable, and mine kept falling off. Took some measurements and threw this together in tinkercad.

- Printed on ender3 v2 with sainsmart 95A clear TPU 0.2mm layer height 228 degC. 10% infill gyroid pattern.
- Uses one small zip tie 2.6mm wide - Link: https://www.homedepot.com/p/Commercial-Electric-4-in-UV-Cable-Tie-Black-100-Pack-GT-100MCB/203531918
- Included some photos of the freebie that frustrated me to the point of inspiration for good measure.

Onewheel XLR Plug Holder

This is a repair sleeve if the tip of your fan speed knob on SG Forester broke and you don't want to pay $40 for a new one. I tried buying a used one on ebay and it came broken as well. The dimensions could use a little tweaking as it is a very tight fit. About 2 mins with a file and I was able to get mine to a nice friction fit on both ends. 
Printed with 0% infill, allows part to wedge onto the remains of your existing knob. You'll need to trim the inward most 7mm of your existing knob before fitting this sleeve. That's the part that snapped on the two I have.

Note: do not push too hard to get it fit onto the hvac module. the rotary switch inside is only held on with a split plastic nut. It will slip on its threads if you push too hard, forcing you to remove the whole module to reassemble.

I used the dims for the D-shaped interface with rotary switch from this model: https://www.thingiverse.com/thing:1776578/files

This model is pretty hacked together from tinkercad, and there are some random artifacts from that visible in the part. I may redesign this better but it works great for now and is not normally seen.

Photos: https://imgur.com/a/bEAReg8

SG_Forester_fan_knob_sleeeve.stl

This is a repair sleeve if the tip of your fan speed knob on SG Forester broke and you don't want to pay $40 for a new one. I tried buying a used one on ebay and it came broken as well. The dimensions could use a little tweaking as it is a very tight fit. About 2 mins with a file and I was able to get mine to a nice friction fit on both ends. 
Printed with 0% infill, allows part to wedge onto the remains of your existing knob.

Note: do not push too hard to get it fit onto the hvac module. the rotary switch inside is only held on with a split plastic nut. It will slip on its threads if you push too hard, forcing you to remove the whole module to reassemble.

Centric ring for mounting Gatling Gun v1 shroud to Morimoto mini D2S 5.0 (3" round lens). The inner tabs of the shroud (for 2.5" projectors) must be trimmed. This part provides a tight fit around the projector and slightly loose fit inside the shroud to provide room for securing with JB Weld.

mini_d2s_v5_gatlinggun_centric_ring.stl

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The Stack Overflow Keyboard RGB LED Riser

Airtag Chuck for Drill

Onewheel XLR Plug Holder

SG_Forester_fan_knob_sleeeve.stl

mini_d2s_v5_gatlinggun_centric_ring.stl