Talking about MyPaint recently led to us re-downloading the old brush set we'd made many years ago. Really wish we'd done so before we'd worked on the last painting, 'cause even though we no longer have much use for most of them due to our current workflow, the painting brush in particular feels very nice to use. Surprised at how well it aged, actually.
We really ought to re-learn how the brush engine works one of these days, especially since you can import MyPaint brushes over to Krita now.