Rubber bands are so useful! Banish messy spills and drips when using paint. Slide a rubber band over the open can, then gently wipe the bottom of the brush against the band each time you dip. This is perfect for small containers without handles. The brush will be less drippy, and the can's rim will stay clean, making it easier to put the lid on when you're finished.
Yup, should've thought of this one too. Hmph.