How about this tuner?

[brewbaker]

Picked one of these up for my medium board. Very nice display, mutes when switched in, small footprint and nice price @ $44. PE Waves.

http://www.pewaves.com/products/Guitar%20Pedals/JPT-10

[teletroy]

I have one that I bought for my backup board, when I had two boards. I kept it, it lives in a gig bag so I always have a tuner if I need it. It works, I'm sure it's not as accurate as a peterson, or turbo, but oh well - I have a turbo too :)
I was going to sell it, but I figured I'd only get $25 for it, so I might as well keep it.