Is there a way to adapt a toy that takes 3 volts to run it, to a household outlet????

Wazz

 

Sure, a "wall wart".

I think they've made like 20 wall warts for every man, woman and child on the planet. I'm not kidding.

Basically, a wall wart is a plug-in transformer that has an AC rectifier and voltage regulator built in, with a cord.

Consider using NiMH rechargeable batteries though, particularly if you have young kiddies. Not a good idea to make them curious about things that are plugged into the wall, as they are likely to start plugging things in themselves. (yes, I did that when I was a kid. I still remember the blinding blue arc it made, too. )

Depending on the age of your kids, keep small batteries out of reach or secured in the toys, as they can be a choke hazard. Plug unused outlets. You can get safety plugs inexpensively at your local hardware stores.

 

Thanks, for the answer...no worries about the little ones, the little ones are big ones, but we still play with toys :}