Skeletonghost, these are awesome layouts! Really love the artwork filling in the pcbs, I'm gonna have to etch a couple of those.
Marbles, I highly recommend checking out castle rocktonics
. As I've mentioned elsewhere on the forum, I've built a full rack of synth modules running off of a 9v power supply typically used for pedals. The module and distribution system is the design of castle rocktonics. Typically, I've noticed that the power supply and case are the first hurdles that people have to jump over, and the page I've linked to alleviates at least the power portion.
As far as other modules, people have already posted a few filters on here (ms-20 and wasp) that are usually considered synth modules, and Neil has posted his layouts for the baby 8 and vanishing point sequencers. I've posted a VCO somewhere on here, which I'll post again when I'm on the device with all of my layouts if that makes things easier.
It can definitely be done on vero, as long as we accept that we probably aren't going to be getting super insane digital modules that are all surface mount components. Even then, it's definitely possible to build something capable of sounding musical or building interesting soundscapes. For me, it mainly comes down to how large the vero board will be, and if i feel like the time it takes to lay it out and what I'll learn in the process are worth the effort (and i usually find they are).
This has already ended up longer than I intended, but I hope it's helpful, and hope it removes some of the intimidation factor! I've still got a handful of vero layouts to post in here, just had some busy times in the past weeks. Hope those will help also. And if you need any info on cases, I'd recommend checking this out
, if only to give you some ideas.