About these Augment Cache Fragments

I've already got the Project skin I wanted and the First Strike boarder for it. So what do I do with this left over Augment Cache Fragment? I have no reason to try to get more and combine them for a Augment Cache because I already got what I wanted. Am I going to be stuck with this think in my Hextech inventory just cluttering it up? I like to keep things clean but this thing is kinda just going to be sitting there until the next Project skin release from the looks of things.