I saw how to build one of these on youtube and had to make one for myself. I got the aquarium air pump at petco for 21$ and picked up some copper fittings at Lowes. I already had some copper pipe and the cocktail shaker. I drilled a hole on the top and bottom of the shaker. Top hole was sized to fit the copper pipe through and the bottom hole is to light your chips and allow just enough air to get a good smoke. the venturi part at the top was simple, just a hole drilled in a pipe cap and small brass tube soldered inside so it clears the "T" and is centered inside the outer pipe. I left the back removable so I can play with the inner tube length to see what works best. With this pump I can control the output volume to get the right amount of smoke. I'm going to smoke some pepper jack and cheddar cheese tonight!
Ran both outlets into one for more output