I've found bobbin winders at Wal-Mart, KMart, Hobby Lobby, etc, but have been way too cheap to buy one (they run about $35). Last Wednesday, I was looking at the Fabric Depot website and found Betty! She was on sale for $16.50, so I ordered her right then and there, and she arrived in my mailbox this morning.
She's a cute little thing, measuring in at about 5.5" x 3.5" and she's VERY lightweight. She runs on 2 AA batteries (not included), but what is included is a power cord. Another bonus is that the boys think she's a lot of fun, so they've both offered to wind my bobbins when I need them!
The sidewinders like Betty are now on sale for only $15 (shipping is $4.95) here, or they also offer some pink ones here for $20. The pink ones are more because they benefit cancer research.
Well, it's time to get the boys ready for their first day of swim lessons! See you tomorrow (mom and I hit some garage sales over the weekend, and I have lots of goodies to show you)!