I recently have become acquainted with kumquats. They are truly an intriguing little fruit. The ones I tried were quite small and condusive to simply plopping in the mouth, whole. The fruit can be larger but those might be a little too big for eating whole. The first taste is shockingly sour but is somehowed mellowed with a sweeter finish. They make a wonderful snack but can also be used for jams, chutneys and relishes. They are also encorporated in baking items like muffins and cake batter. When trying to imagine their many applications compare them to orange and lemon rinds.
Kumquats can be used in much the same way, but the entire fruit can be used (not just the rind), removing seeds first, and then sliced or chopped to the size you need.
They can also be used as a garnish in salads. When stored in the fridge they have a decent shelf life giving you plenty of time to find places for them.