It’s one of the hottest things selling in Sephora stores right now: rollerball fragrances. They’re slim pocket-sized perfumes that you apply through their metal rollerball tips. Talk about convenient! And they’re a brilliant cost-saving solution in these trim times. Each rollerball averages around $20, so you can try designer fragrances like Marc Jacobs Daisy, Stella McCartney Stella, and Missoni Acqua without a heavy commitment or breaking your piggy bank. We love the Michael Kors Rollerball ($22)—it’s dual-ended, with a fragrance on one end and a sheer fragranced lipgloss on the other. Delicious!