This enclosure can be used to house the PCB from one of these IR remote controllers:

I've ordered one online and the battery compartment came crooked internally, rendering the whole remote unusable. I've discarded the original case and transplanted the PCB in a new case that I've designed.

Hardware needed:

• 8 mm M3 screw (x4)
• 4.2 mm M3 heat set insert (x4)
• 20 mm circular normally open switch (x2)

The fusion f3d file included so you can modify it to fit whatever tactile switches you've got.