Update: The internet is a wonderful place. Shortly after posting this, I received contact from one of the commenters below. Through a short discussion, it looks like one of the readers went on to buy 100 sets (400 pegs) from the Shapeways link. I have them listed at Shapeways manufacturing cost only, but I feel I profited in helping the world in such a little way.
When buying a house, you always find that there are some parts of the house that the previous owner had something installed, and the bag of spare parts and the supplier they used are lost to antiquity. This some times only gives you the option of replace, hack, or just live with it. This happened in the house we bought last year.
The shelves in the kitchen don’t have your standard Ikea style shelf pegs that hold the shelves up. Neither do they have the standard shelf pegs you can buy at home depot. These are custom jobs created by some unknown manufacturer. Not only are the non-standard pegs, but the holes they fit into are not only custom, they are a funky insert, twist and lock style.
After a discussion with a colleague at work I thought I’d 3D printing. After going through a bit of a process, I ended up ordering a set from shapeways.com. Here is the comparison of the original with the new.