Small mono tube any exist?

I am hoping to find some small tube (preferrably) monoblock amps that can sit right next to Von Schweikert Unifield 3's. Ideally, the amps would be built vertically, such as Nagra VPA's, but for less $$$ used or new, or be able to be turned on end. Any ideas?
Heathkit UA-1s or 2s. I have two sets and used them when I had stacked Quads. If you don't find what you are looking for let me know and I might consider selling a set.
VTL Tiny Triode's have 25 watts I believe...
Quicksilver Mini-Monos
I second the Quicksilvers. Also consider AES Six-packs and Audio Valve.

A few weeks ago I had the pleasure of hearing Dodd Audio's newest battery powered amps(mono blocks) and they are wonderful!! You should check them out, they are VERY fairly priced.

Thanks for the help everyone! Time to start researching...