The problem with travel-sized makeup brushes is that they're either too flimsy to do anything of worth, or they're so tiny, they just don't stack up to the effectiveness of their full-sized counterparts. Not so with the four brushes contained within Bobbi Brown's Desert Twilight mini brush set ($55). The reason is because these brush heads are closer to full-sized, making it easier to pick up, distribute, and blend everything from your blushes to eyeliners. (It's actually the handles that put the mini in these minimakeup application tools.)
The kit (which comes with a metallic, faux-leather case) includes blush, angled eye shadow, eye sweep, and eyeliner brushes that are built to last. Now if Bobbi would just add a concealer and eyebrow brushes in the mix, you'd have pretty much all the brush basics covered.