Watches, unlike sundials, can tell time after dark and are easy to wear while swimming. Opt for a less bulky timepiece with today's Groupon: for $45, you get $90 worth of watches from Flüd Watches online. Following purchase, the remaining balance of this Groupon can be applied toward future watch purchases.

The timetelling team at FLüd Watches perpetually tinkers with new styles and watch designs, resulting in collaborations with companies including Dr Pepper and Exile Radio. The TableTurns gold chrome linked watch ($70) models a tiny turntable for novelty timekeeping, and The BPM black watch ($80) employs its fully functioning calculator keyboard to determine restaurant tips and daylight-saving time. Patrons can peruse the press section of Flüd Watches' website to view magazine clippings and glossy photos of celebrities such as Terrence J, Machine Gun Kelly, and Kreayshawn sporting the brand's stylish and whimsical designs.