Yeah the Blue Box is great. Mine is a more recent one, I've done the mod where you remove a capacitor for more volume/better sound, dunno how it compares to the 70's original.
I saw a kit for a modified clone version with added options such as a switch to change between one and two octaves down, i might get that soon.
http://shop.pedalparts.co.uk/Blue_Fool_MXR_Blue_Box_clone/p847124_9554536.aspxthanks :) in this photo: Behringer mixer, I like this one due to the number of useful channels vs some of the more noise-scene-standard models, + it has both pre and post fader sends, a couple of channel inserts etc. the thing in the centre is the Ghostbox, one of my earliest and best circuitbent things, the circuit is from a ghostbusters voicechanger toy, mounted in an old radio casing. Can make all sorts of harsh noise, tones, gabber-ish beats etc on its own. Reverb tank from an old amp on the top right, driven by an FX send and put thru the envelope filter and Metal-X. DOD Metal-X is supposedly identical/similar to the rarer and more expensive Corrosion, tho I haven't compared them, just read on the internet that's the case. Anyway it's a really nice distortion and easy to find cheap on ebay... Bottom left corner; two homemade fuzz pedals based on this circuit -
http://home-wrecker.com/bazz.html - the red one contains 4 in a row! and the clear box is two of them as per the 'buzz box' at the bottom of that page. Both made with pretty much whatever random components i had to hand, they sound pretty nasty and sometimes pick up christian radio stations really clearly :D