One of those tools you wondered how you ever did without. Bought at emodels.co.uk The mixer efficiently and quickly mixes paint to a much more consistent quality. It is also capable of helping to bring some of those jars of paint back to life with the addition of some thinner.
I actually recorded this quite a while ago and then life happened. I got this kit from a flea market for $10 so a great deal. Planning to build it out of box.