Chucking stuff in the bin this morning and I noticed that the biscuit wrapper I was throwing out was semi transparent , put it to my face and I can see though it but blocked out a lot of light. It now sits on my desk with a strip of duct tape on the short edges and a bit of elastic string tied on quickly through a nail hole in the duct tape. Total cost about 20 cents, time taken 5 minutes and I now have 2 emergency snow goggles for my winter first aid kit in case I loose or meet some-one who has lost their sunglasses. Not perfect but still cheap and effective.
Anybody else done similar?