This is my shoe blog post. (I think someone else did one but I can now only find that one to link to, comment if you did a shoe blog post.)
I made some rubber insoles for my shoes, to make the soles thicker. I walk to work most days, and I also buy a lot of $30 shoes off 1-day, which usually are pretty lightweight and thin, so I might do this a lot more. The rubber is from one of my favourite shops, Para Rubber.
I've only been wearing them for ten minutes so they might be completely hopeless, we shall see.