Real Techniques’ Travel Essentials brush set
One of the “original” brush sets from Real Techniques 1.0 is still being sold in almost the exact same format. Only the slipcase is different. When I bought mine, it was on deep discount at the nearby drugstore because the old line was being phased out; but the brushes still work just fine. It doesn’t have many brushes, but they’re a solid assortment: one eye brush, one foundation/concealer brush, and a multi-tasker.