Adding Growlery Capacity?

I have a weakness for fendered bicycles. It has become painfully obvious that they take up twice as much storage space. To deal that that I took a baby step; I removed the fenders from the white "Ghost of Elvis" Kvale. At some point a person doesn't need two fendered Chris Kvale bicycles. Another thing has also become apparent. I have no provision for miscellaneous storage. The smaller parts can be dealt with boxes in and beneath the bench. Where the hell do I put fenders, wheelsets, etc? I'm thinking maybe an overhead compartment over the door. An attic.