Learning Travel: Make-Your-Own Mosaic in Venice
This sounds like the ultimate geeky-but-cool week in Italy. Studios like Orsoni will give you hammers and bits of glass and some instructions on what to do with them, and let you take your grand creations home with you after your week-long learning experience.
Since wandering around Venice now seems to have so many rules, we reckon holing up in a mosaic workshop is a good way to escape tourist-ville. Being creative is still allowed (so far).