OK, so I was looking for a replacement glue brush after losing my old one (long story - not today) and with no time to order one, I got desparate - urh - creative.
I looked around the art stores - no luck. Harware store - Grrrr. Cheapshop - BINGO!!! A man's shaving brush - no joke.
At first, I thought it would just be a standin, but it is so handy, and I can sit it on it's bum/handle between uses, it's hoggish bristles are as good as any specialized one I've forked out squillions for, washes out beautifully, sits great in your paw with no wrist-pain after long stints... no drawbacks at all yet, and now I am always on the lookout for great new ones.
Try it - seriously.