If you are in London on June the 20th get to the UCL Institute of Making for their Festival of Stuff. It sounds great!

Last years 5-day Festival of Stuff featured masterclasses on the theme of felting, electronics, blacksmithing, and wood working. It ended with an extravaganza of stuff, where we spilled out onto Malet Place for the first time filling it with demo-stalls and making stations. We brought back some old favourites like blacksmithing and rope making, along with some new discoveries and the chance to sample our homemade liquid nitrogen ice cream.

http://www.instituteofmaking.org.uk/

They have a library of materials that looks pretty interesting too: http://www.instituteofmaking.org.uk/materials-library