It's easy enough to make up a rest BC. A bit of plate for the bed with an upright, (can be tube, rod or whatever else you have to hand), and then a bit of angle for the rest on top of the upright will make a temporary alternative until you drop across something more fitting.
I have to ask; Why? Nothing more, just why. Have you never heard the saying:
"If you can't say something nice, say nothing"?
Seiously mate, that was just a pointless, worthless comment which wasn't even thrown in with any useful response in any way or form. I'll honestly never understand why people do that. Just because you personally see no use for something does not mean it has no use or worth. If you think something is worthless, cheap or **** in some way, at least back your comment up with valid reasons as to what may be problematic areas with a piece and what to look out for, or advice on how to rectify known weaknesses. As is, that just comes across as a:
"I'm not getting any from the wife and just have to take my frustration out on random people"
type comment. Honestly, personal opinion is one thing, but at least have the decency to back it up with reason or explanation, which might actually make a pointless comment at least slightly worthwhile. As is, that is a perfectly functional item, in decent nick, which will work well for anyone who just wants to do a bit of wood turning.