Picture → a multi-colour clicker keychain: your artwork on a keycap, a shell that a mechanical keyboard switch snaps into. Export 3MF / STL.
Flat illustrations, logos and stickers work best: few colours, no photos, gradients or shading.
Point two colours at the same filament to merge them. Each filament is one slot on your AMS / multi-material printer.
Switch hole too tight or loose? Change "Switch hole" by 0.05 mm. Keycap falls off or will not go on? Change "Stem fit".