There's quite a few USB power modules out now from the likes of Doepfer, VOID, Endorphin.es, Pulplogic (for "standard" tile rows), Intellijel (for Intellijel tile rows), Konstant Lab, Frap, and Synthrotek. The Doepfer one would actually be fairly interesting in the middle of the top row on a larger build, as it can support four inexpensive USB gooseneck lights. Put two short and two long ones on this, arrange suitably...very cool results.