Found these Coffee Cup Warmer items on eBay:
4 Port USB coffee cup warmer heater lot of 4 | US $11.75 (0 Bid) End Date: Wednesday May-23-2012 23:00:47 PDT Buy It Now for only: US $14.22 Bid now | Buy it now | Add to watch list |
TRAVEL COFFEE CUP WARMER
 | US $21.50 End Date: Thursday May-24-2012 20:21:48 PDT Buy It Now for only: US $21.50 Buy it now | Add to watch list |
Salton MW-1 Hot Spot Beverage Coffee Cup Warmer NEW in Box with Mug
 | US $15.00 End Date: Friday Jun-01-2012 0:31:18 PDT Buy It Now for only: US $15.00 Buy it now | Add to watch list |