I used to pick up what ever new ones I could find on our trips to WDW in the early 80s. When EPCOT was young, they sold them in the shop in Germany. I then added to the collection with various PVC figures I could find at toy shops, with fast food etc.
They're mostly in the rafters of the garage, but I hope to get them out soon as I'm redoing my home office and would love to display them.