Was hoping to add something here but will simply echo what's been said.. I love my SHO and use it an awful lot, so if I was to pick my favourite simple build I'd probably go for this one; does one thing but is very good at it, and can do it in lots of different set ups.
Fuzz wise, the Hyperion and Torn's Peaker are two great, simple and fairly classic fuzzes from Devi Ever which would appeal most (some are simpler but not for everyone). The Meathead is another great, simple circuit, while the Bazz Fuss/Buzz Box are great fun and can be tweaked and adjusted in many ways. Sound very good, too!
Had a bit of fun with the Electra/Woodrow circuit (did a little demo/video with a few different transistors and diodes which should be linked in the description) but ended up not boxing it up. Good sounding but not something I'd probably use I guess.
Really like a nice Rangemaster, too. Built a NPN version with input cap blend (aka the DAM Red Rooster) which I really like.