Sure, they're sort of funny-looking, but if you've got a toddler or preschool-aged child (or you've got one on your holiday list), then a Sing-A-Ma-Jig ($13-18) may be at the top of their list this year. When you press certain points on a Sing-A-Ma-Jig, it chatters and makes all sorts of noises. But its real power is in singing. In fact, if you get several Sing-A-Ma-Jigs together, they'll even harmonize. C'mon, admit it. . .it does sound kind of cool!