Product review (5 stars): Fat Trapper Grease Container
These are made for the Fat Trapper Bags.  You just bend the bag close tab just enough to keep it out of the way and slip in the fat trapper bag into it.  The holder is easily washed either by had or in the dishwasher and doesn't retain odors.  It even suppresses the majority of the odors if grease molds from the bags not being changed frequently enough.