It’s a great thing that there exist many plastic controllers that do not sacrifice quality, so you can get a plastic controller that lasts a long time.
BD Retro Mods makes awesome lever and leverless controllers that you can enjoy with retro or modern games.
Mini leverless controllers are a dime a dozen, but it's possible to order the NEM Luna with rare MMD Princess switches.
The Granpro Itadaki by FILCO has 18 buttons—two of which you can cover—as well as a rare right palm button.
The GuileKeys GM-16's most unique aspects are its smaller buttons and magnetically removable top panel for custom art.
The Caster Portable can fit a Korean-inspired joystick and has more than eight buttons—plus an optional analog stick. What more do you need?
Okayama Tactical Gaming's Ikaruga is so customizable that you can even order it with the unusual layout depicted in the picture.
Ionic Impact is Swiss and offers DIY cases in lever & leverless formats, such as the Ionic and Doric Fightstick Cases.
The Kurtroller is like modular controllers meet LEGO—with many possible colors for its modules that allow you to swap layouts on the go.