Small adventures? Check. Heroic guinea pigs? Check.
Quirky and fun time travel fantasy from the cavy perspective. If you want stories about what guinea pigs do when their owner isn't around, be sure to read the short stories from the Time Traveling Guinea Pigs series.
Angel the guinea pig wants to hide. From the awful smell of pot roast in the kitchen. From her cage-mates. For a little bit.
At least with the Human's girlfriend over, the cage would later be filled with good treats. Only her favorite magic eight ball toy would make life better.
If Angel could find it.
If you want quirky time travel fantasy with guinea pigs, be sure to read The Toy Thief.