My most recent toddler shoes are ballerina style shoes made according to an e-book by klimperklein
I started out about 2,5 years ago with 4-5 pieces of leather bought on a market in the Netherlands. I originally wanted to sew a handbag from it - alas, what was needed much more urgently were shoes for my daughter. I took the measurements and according to some instructions I found, I managed my first pair of shoes. Parts of the appliqué were a bit tricky to sew, especially with my old Privileg sewing machine, but my daughter loved her new red leather shoes.
The second pair got a nice appliqué but unfortunately the leather (taken from my mum's old leather trousers) was not ideal for shoes.
So the next pair were made from specially bought leather: a Pippi Longstocking pair: