Anyone knows how to get alps keycaps

I have a bunch of alps switches or already replicas and I had the idea of building a Bluetooth gamepad like the g13 of Razer nostromo or orbweaver but simpler and using mechanical switches.  the adapter that I have only let's me use 12 keys. Which will be Q,W,E,R,A,S,D,F,Z,X,C,shift. I have everything ready except for the keycaps. I wanted to ask here to know if anybody knows where to get alps keycaps they don't have to be any exact letter I'm going to paint them the only thing that I need is size. So if anybody has some keys or know where to get them I would really apretiate. And BTW if anyone's is curious space and Ctrl are mapped on my mouse on the thumb buttons