When the Sigma Brush Cleaning Glove was released, I immediately thought it seemed a bit gimicky. Then other brands started to create their own versions, and Sigma released a Mat version for your sink. Over time I got why they'd be useful, but I wasn't willing to pay €40+ for one. I always meant to pick up a similar version but never spotted one while shopping so always forgot about it.
I've since come across something that could be considered a "dupe" and wanted to let you know about it. Just before Christmas, I spotted a pack of 2 Facial Cleansing Pads in Debhanams and just last week I saw something similar in Pennys/Primark. While I'd never use them while cleansing (I prefer flannels to any of the gadget things that are doing the rounds), I decided to pick up a packet to see what they would be like for cleaning my makeup brushes.
I've used them a few times since and they work amazingly well! I hold the handle between two fingers, spray some cleanser (usually baby shampoo, water and conditioning spray mixed in a bottle) and swirl the brush. It lathers really well because of the little bristles which help to remove makeup from the brush. It's helped to speed up the cleaning routine allowing a fresh clean brush without the sore hand. I highly recommend picking up a pack if you see them around!
Real Techniques now also have a brush cleansing palette available. I believe it's already in Superdrug stores and will be in Boots in the coming weeks. I think I'll pick one up for larger brushes, I like that it has a lip on the sides. Have you tried a cleansing tool for brush cleaning yet?