There is an increasing number of people who own or are looking into 60% and other mini keyboards with non-standard keys. This makes purchasing keycaps for your board more restrictive so I thought it would be a good idea to catalog all the non-standard keys of various small form factor keyboards such as Filco Minila, Leopold FC660M, KBT Race etc. and create a specification set of supplemental keys.
This would allow you to buy any standard set and a supplemental TMC set to outfit your board. After all, it seems that buying 500 sets of 3 non-standard spacebars would be a lower cost per purchase than 50 sets of 1 non-standard spacebar.
Due to restrictions on my time I'll need help figuring out which boards, identifying how many non-standard keys, and how many users there are so if you're a mini layout owner please jump in. Filco Minila for example has 10 non-standard keys (I think) including a 3x sized space and two round top Fn keys. Leopold FC660M has 3. I've created a spreadsheet with keyboards and keyboard owners so we can get an idea of our numbers per model.
So far I have:
Filco Minila
Leopold FC660M
KBT Race
KBT Pure
KBT Pure Pro
Keycool 84
Noppoo Choc Mini
Tex Beetle
This first post is not completely thought out so bare with me.
So between these 5 keyboards, you would only need a 20 key set to cover any of them. Please correct me if any of the info is wrong.