The Sephora-Style brush holder!  This video from EnkoreMakeup shows just how easy it is to make your own!  The tiny glass beads are SUPER-cheap at craft stores, as are the glass containers!  I have made several for myself- 3 round wide-mouth shallow vases for my large brushes, and 2 large martini glasses for my smaller/shorter brushes!  They look adorable and only cost a couple of dollars per holder!

 
 

These are a dupe for MAC paints.  They only come in neutral shades, except for one dark gunmetal blue-gray paint.  People have been finding them at Walgreens and CVS.  You should note though, that these are only a "deal" compared to MAC's if you buy them during one of the frequent BOGOF sales!