Although I haven't gotten to the actual construction yet, I have been thinking about the next challenge. I find it interesting that this challenge also easily relates to a body part that has been affecting me- my eyes!
I had cataract surgery about four years ago, and recently had to undergo a simple laser procedure to take care of a fairly common aftereffect- the sac that holds the lens also goes opaque. I'd been noticing that my vision was getting more and more blurry, and even my glasses couldn't take care of it. My contact only made it worse- blurry vision looking through water! I was relieved to find that it can be fixed fairly simply, and also to learn that the vision in my other eye had actually gotten less nearsighted. So now I am back to glasses only, but I don't need to use them all the time, only when distance vision is important- like driving!