Purchase wooden pegs so that if, and when, they break the wood can be either composted or burnt and the steel spring sent to the scrap metal dealer. Ecostore have them in their online store.
A common complaint with wooden pegs is that they leave marks on the clothes sometimes. We haven’t had this problem, however the way insure it doesn't happen to you is to place your pegs in a saucepan of cold water and then bring it to the boil. This will make all of the tannins leach out your pegs will continue serving you faithfully for years - cool ay! We tend to keep our pegs out of the weather as well just to make them last longer carrying them in and out with the washing.