Just for starters I thought I'd post some photos of stuff me and my partner John built.
Li'l Lupe single-ended amp. Basically, it's based on the Fender 5F1 Champ circuit, but the 10K PS dropping resistor has been replaced with an 0A3 and a Fender choke, and it uses a 7F7 instead of a 12AX7. The power and filament transformers are cheap off the shelf stuff from Mouser. I was pleasantly surprised at how good this sounds, I think the screen regulation has a lot to do with that. This is my let's see how cheap I can build a decent sounding amp project. There might be $100 in parts in it.
This is a prototype of the ST70 knockoff we made using Shannon's board. It'll look even nicer after I get the nickel-plated transformer covers back from the platers.
This has nothing to do with tubes, I just thought it's cool that a Flxible Flxliner coach is still operating in revenue service in 2006. Some of the Flxible Flyers the CTA operates aren't a lot newer.