2. Pebble Elastic Billfold

Price: $22 at marcjacobs.com
This collection looks completely traditional and square, until you notice the thin, neon-electric elastic band. Choose from black with purple, pink, orange, green, or blue. The wallet is constructed of 100% leather with a slightly nubby pebble finish. If you’re not a billfold user, there’s also an ID case.