Tiny OLED as button

Hi
I need to make a small computer "keyboard" where the keys are fx. tiny OLED.
The one from digikey cost around 100 usd each which is to much.

I saw some from Seeds to 15 usd each.

Is it possible to make them work as a button?

Or does anyone have some ideas about what i can do?

Regards
Jakob

How about some links to what you posted above?

I'm not clear on what his means: "the keys are fx. tiny OLED"

what is an fx. tiny OLED?

Or are you just saying that each key needs to be a tiny OLED screen on top.?

the 0.5in. ones are the smallest I have seen.. (but havent really done much searching either to be fair)