Mini keg tappers work by snapping to the top of the keg and use a 2 piece bung. Commercial mini kegs have an air vent bung and serve via gravity. I have reused many commercial mini kegs in the past. Taking out the air vent bung almost always destroys it, and sometimes damages the mini keg. Heineken style minikegs are different and cannot be reused. There is no mini keg tap to standard faucet made. You would have to make your own and getting it to seal and fasten to the keg is the problem. If you find a solution and can sell it for under 20 bucks I want in on it.
............Alright Brain, you don't like me, and I don't like you. But lets just do this, and I can get back to killing you with beer......~Homer