In CT, The Quilt Shop is not far off I84, so it wouldn't be a huge detour.
http://thequiltshoponline.com/directions.html
This is off your route a bit so I don't know if you'd have the time and want to bother:
http://www.fieldstonehousefabrics.com/ in Sidney Center.
The shop is insane. INSANE. Call first to check hours.
Have a fun and safe trip.