passwords

what kind of lever should i add?
I know the colours look bad but umm im gonna replace them later with a better palette.
for now the generator is working , and the slots give a good enuff casino like vibe. Im jus thinkin of adding a pull lever cuz thats how slot machines r supposed to work but i dont wanna ruin the thing i need to figure it out.
plus i think when increasing the number of slots it shuld look better and not just slots appearing outta nowhere