Fitting a half keg or full keg can be hard. The keg diameter is the tricky part. Check
HERE For sizes. The Slim half kegs MIGHT fit, if you removed some of the Door plastic. Also be careful of freezer space in your fridge and the actual Element that protrude into the usable space of the fridge. Try and look for
Small Freezers that will have more room.
You would have better luck trying to fit too Sixtels or 1/6 "logs" into your traditional mini-Fridge. GOOD LUCK