The first two RWG worlds I started in Alpha 20, beakers were like a Spider-Man saying; "Everybody gets ONE", and finding a second beaker was nigh impossible. In My current RWG World, started after 20.1 went stable, I now have (collected by both Myself and two other players in My Game world) a total of 4 beakers( using one in Main base campfire, and another to make a chemistry station), and currently 14 acid. Wheels are still rare but we have been able to make enough using the acid to construct 2 mini-bikes, a motorcycle, and a 4x4. So the beaker and acid items have moved from "hens teeth" to just rare for us.