Over the next few hours, Eisen simply did his best to properly level these Ego-Items up. It was relatively easy for the Tool, once he finally found a proper use for it, but the other items, meaning the charm and the Accessory-Glove, didn't really gain all that much experience at all.
Eisen figured that especially these things had to be passively leveled up through combat, because there usually wasn't a direct use for them, at least not as far as he could tell. He wasn't even aware that charms like these extisted before he made these Ego-Items and knew what 'type' of item they were.
But for the most part, Eisen figured that he could just wait for another little while and just keep them with him, because it wasn't like they didn't grow at all. The Charm was rather annoying because it didn't seem to grow unless directly held, but since the tool could be held in one hand, it was mostly fine.