Everything and the Kitchen Sink
The folks at Fairfax Hardware (2201 Concord Pike, Wilmington, 656-2139) will fix almost anything for loyal locals, but the biggest repair items are screens, whether aluminum, copper, fabric mesh or Fiberglas. Staffers will fix most other stuff, too.
Also see:
Felton Hardware (121 W. Main St., Felton, 284-4536)
Fenwick Trustworthy Hardware (37520 Lighthouse Road, Fenwick Island, 539-3915).