National Motorcyce museum - Coventry Road Bickenhill, Solihull, West Midlands B92 0EJ 01675 443311
Museum of the Jewellery Quarter - 75 - 79 Vyse St | Hockley, Birmingham B18 6HA, 0121 554 3598
The Pen Room - 60 Frederick Street, The Argent Centre, Birmingham B1 3HS
All about pens...
Black Country Living Museum - Tipton Road, Dudley DY1 4SQ 0121 557 9643
The Red House Glass Cone - High Street, Wordsley, Stourbridge DY8 4AZ 01384 812750
I've seen that one on TV, looks well worth a visit
I got all thsoe off TripAdvisor - I've never visited any of them myself, although I rather fancy a look around the Jewelry one (it's an old Birmingham jewelry factory that's been preserved as a museum).