And these pretty much complete the Steampunk Chell Cosplay... Based on the Portal 2 boots, because I didn't want to be bare-footed all day Instead of the arch to minimise falling damage, I went for giant springs as a technology replacement more suited to the Steampunk design and historical era.
These started as two pairs of shoes, one cheap pair of black pleather boots and an old pair of canvas shoes. The heel 'spring' is actually plastic tubing as I could screw this straight into the heel to secure it firmly (plus a lot more sensible to walk in).
I totally didn't realize these were Long-Fall Boots the first... 5 times I looked that them. Now it seems blatantly obvious. I guess my head was just full of Spring-Heeled Jack.