Selling for approximately $30.00 US (or less), this tidy little number is a perfect alternative to a bass stand. Fits around amp handles or carpeted cab exteriors.
From the MarkBass website:
This handy accessory allows you to safely store your bass against the side of your amp. Strong velcro straps attach the neck of your bass to either the cabinet handle or the side of the cabinet.
Any busy bassist knows that the less trips to and from the car you have to make, the better. If you can carry all your gear in one trip, you’re the envy of the whole band! Bulky things like stands are an inconvenience.
But this ingenious little Bass Keeper travels inside your Amp Bag pocket, or the back pocket of your gig bag, and then holds your bass securely to the side of your cabinet whenever you’re not playing. No bassist should be without one of these handy accessories!
This next image was borrowed from Talkbass.com user "Gunny". The post is HERE.
Available online at places like Musician's Friend.