Wanted: Cheap 3xAA(A) flashlights with momentary switch as modding host

Since my children love my RGBW-lights I’d like to build something similar with 3xAA or AAA cells. For a nice ramping UI a momentary (side) switch is required. The light should be cheap. I know and own some nice cheap lights with tailcap clicky but didn’t find a suitable light with momentary yet.
Any ideas?