I recently got a rubber dome board with MX-style keys, and I plan to glue a set of plunger stems to the bottom of a pan, put the keys in, and fill to cover them with liquid.
But I have never seen anything that would hold Alps keys upright, have you?
Prepare to be amazed.
Less than 48 hours after posting that, I find an old Packard Bell keyboard at a salvage store for $3. I almost avoided even touching it, since I have bought a couple of old Packard Bells in the past for their MX-compatible but unexciting ABS key caps, and I don't even need them. (plus, they have bigass Enters and 1.25 Escapes) But curiosity got the best of me, and I popped a cap.
It looked to be Alps-compatible, so I bought it. I got home, and it actually worked! And, although ABS, it looks to be a decent-quality laser printing job!
Almost as important, if not more so, I got a set of Alps-compatible plunger stems, so I can do the same thing and glue them to the bottom of a pan for retr0briting Alps caps from those old Apples.
For keyboard science!