A bridesmaid proposal box is often filled with small gifts that go well together, like a makeup bag filled with brightening eye masks, bath bombs and hand lotion or a bottle of champagne with a personalized wine glass and chocolate. Picking a specific theme will help you consolidate your gift ideas and, thus, can also make it easier to stick to a budget. It's also common to have a filler like tissue paper, crinkle paper or confetti so everything is elegantly displayed together—and protected if you're transporting them. And don't forget your gift box isn't complete with a bridesmaid proposal card.