If you would like to make an essentially free vacuum chamber with pump, Chris Notap has a useful video on making one out of spare parts using a vacuum pump from a discarded dehumidifier or fridge. Component parts are in the description. If you want something a little more solid, check out this write up on making vacuum chambers from several pumps using PVC pipe as the chamber.
If you are working in a lab environment, there is a good chance you already have dedicated vacuum lines and don’t need a pump. In which case the PVC vacuum chamber can be a pretty quick and cheap solution to your own custom built vacuum chamber. If your chamber is on the smaller side, we don’t give the cardboard wasting giant enough shout outs, but good old Amazon has some pretty well rated cheapo chambers.