GSI Outdoors Mini-Espresso Maker Small Stainless Steel

As long as you don't tamp down the grinds, this works perfectly. I fill water (heated or unheated, it doesn't seem to matter with this small of a moka pot) to just above the pressure valve release hole, fill coffee and brush off the excess, then screw on the top tightly. On a Whisperlite, I like putting this on a larger circular metal heat distributer because I've knocked this thing over a few times without the base. I also use a small metal cup (shot glass size) to catch the percolated coffee. My only grief with using this product is that sometimes I need more than a shot of caffeine to get me going in the morning. It's also not good for more than one (unless you're really ok with splitting a shot), because it's too hot to undo and refill with grinds.

The uptake inside should be a 1/4 inch further down. That way possible 95% of the water is used instead of 80%. I decided for stainless steel as it is a healtier material.