The We-Vibe Tango is highly regarded as one of the best mini-vibes out there, and it's been positively reviewed by Queerie Bradshaw, Intellectual Homosexual, and Autostraddle (to name a few). It's made from a silky smooth hard plastic; and despite it's small size, the Tango certainly packs a wallop, making it a spectacular choice for folks who love lots of focused external stimulation but want something small and discreet. It's also very quiet.
The Tango boasts 8 vibration modes, and can give you 2 hours of play on a 90-minute charge. It uses a magnetic USB charging cable, so you can travel anywhere with it. To clean, use warm soapy water and be sure to pat it dry with a towel.