Take a regular bent vacuum adaptor for the reciever end of a still, stuff a lil cotton in the drip tube(from the condenser opening, don't stuff it just lay over top of hole to stop dessicant) and pour in some dessicant. Plug with cotton or glass wool. Ghetto drying tube with ground joint, viola.
Edit: Oh yea, you'll need to stick a piece of something in the vacuum takeoff nipple. I just ball up some teflon tape like a little joint. The thick center will stop it going all the way in and make a tight seal.