From what I can find around the net, there is a lot of enthusiasm for Tone God's Bullitt tube tremolo pedal: https://www.thetonegod.com/diy/bullitt. Seems to me (an electronics moron) like a very interesting circuit. I am relatively new to designing my own vero layouts, and I started to try to make one for this, but quickly realized I was pushing it w/ regard to my skill level. I may try to do it point to point with the LFO section on it's own little piece of vero, but I thought I'd throw it up here first in case one of the generous vero geniuses on here wants to take a stab at it.
I think it could probably fit in an appropriately-sized box (maybe not — and maybe that's why there isn't a readily available layout already).