Enhancements don't take up item slots, so you can use a jump-enhanced card together with boots of striding to jump extra far, for example.
Yeah, I know. Unfortunately, both Boots of Striding are already gone in our group. In the end, the enhancement is still nice as a legacy to future generations. It was just really unfortunate that we found the item 71 right after the enhancement because I would have preferred it. But that's just bad luck.