Hi - just had a dust cover made. Basic rectangular shape with offset handle on top, felt padding. Fits very well.
If doing it again I would perhaps define the shape better and put a flap in at the back and couple of slits at front so cables can be left attached.
Supplied by ROQSolid
http://www.amplifiercoversonline.com
http://www.pianocoversonline.com
http://www.roqsolid.co.uk
Saw a few old threads on this and thought I'd give it a go. Very happy with it. Cost £31 (delivered).