I have one of these that is too small for my needs -
http://www.facewest.co.uk/Snap-Snapod-Mini.htmlI can get a 1lt nalgene, two pairs of shoes and a chalk bucket in with a minimal amount of food, which is probably adequate for a lot of people but frustrates me trying to cram extra supplies in for long days in the lakes.
Would be ideal for taking down the wall, or for those who don't carry as much crap as I evidently do. Also has a laptop sleeve/pocket thing so could be used for commuting.
After £20 inc. postage
