Inspired by Luke at Geek Gaming (Youtube link), I thought about my ancient collection of paints. Some of them I've never opened since I got them maybe seven years ago. I'm sure that some of them were many years old before I even acquired them.
One of the problems with these paints is that they require considerable mixing to bring them back to life. This means lots and lots of shaking, and that's hobby time being wasted.
So Luke had bought this vortex mixer, and he was showing how well it worked. I had a few bucks left over so I figured it would be a good idea to get one from Amazon. And here it is:
As it turns out, it's the exact same one as Luke bought. I tried it out and it mixed a paint that had separated into pigment and medium in big splotches. It took a little while but the paint did mix. But doing so saved me about 50% of time and a whole lot of arm shaking. I just press the paint down on the centre and the mixer does the work.
Apparently, there is a danger to using the shaker to long because the vibrations aren't good for you. But I reckon that if I take breaks between mixing spurts, I should be OK.