This is a TARDIS keycap I made to fit Cherry-style keyboard switches. I was inspired by the glowing crystalline mini-TARDIS the Thirteenth Doctor has on her TARDIS console, though I based the design largely on the Eighth Doctor's version of the TARDIS prop.

I wouldn't use this on a commonly-used key, it's made to stick out way above the rest of the keys though normal keypresses do still work. Put the TARDIS on Scroll Lock or something equally-remote on a keyboard with LED lighting for a really neat effect.

If you'd like to buy a print of this, buying it from this link to my Shapeways shop would be very cool of you. If printing it yourself, I recommend high-res resin printing for the signage and other details to appear clearly.