Many people think guinea pigs are an ideal fist pet for a child. That well may be- they’re gentle creatures and not too difficult to take care of- but they do still need care. I really don’t believe any animal should be brought into a new home over the holidays.
The Humane Society has a wonderful article about guinea pig care that any potential owner should read before adopting one. When I was a child we had a hamster and all of us loved him dearly. Having a small pet can be a wonderful way to introduce a child to the demands and joys of pet ownership, but be sure you, the adult, are overseeing the process.
With proper care, small rodents like guinea pigs and rats can live for several years.