I was looking at it yesterday and we have a big peg board fastened to the wall on one side and the electrical conduit with outlets on the other. Its mostly shelving and cr@p piled along the walls. It would take a lot of moving stuff but could be done. The peg board frame is bolted in so it can be removed without too much trouble. Might need longer bolts after adding insulation.Now might be a good time to quit attaching things to the walls until you decide what to do. Double sided tape might be your friend for awhile.