USB Lithium Ion coin cell battery charger LIR2032 from Bobricius on Tindie
Micro USB 5V 1A 18650 TP4056 Lithium Battery Charger Module (1pc) - Rotor Village
USB LITHIUM 3-PORT CHARGER - RYOBI Tools
Adafruit Universal USB / DC / Solar Lithium Ion/Polymer charger [bq24074] : ID 4755 : $14.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Lithium Polymer USB Charger and Battery - Retail - RTL-09876 - SparkFun Electronics