Carry four extra memory sticks with UMEMD
The case is shaped like a UMD. The reason for this is that it will save pocket space by fitting right inside the PSP where the usual UMD game would go. Only drawback is that the case is only good for PSP-1000s. Also, it is obviously not as useful if you're planning to play a UMD-based game. It is, however, great for playing PSN downloaded games saved on the memory stick, storing that humongous music library of yours, and/or keeping your entire photo album with you on the go.
So far, no price has been set. Team Xecuter plans on selling these little babies in two weeks time.
[Via DCEmu Forums]