I had the same problem!!!! my guinea pig seemed so board!! one day i went to a store and got a 25 cent machine toy just because, it was a soccar ball about the size of a kiwi (if it was round) well, she loves to push it with her nose, at first it kept her busy for hours! i think she got bored of it but yours might not, oh, and i t wasnt a bouncy ball, it was hard plastic so she couldnt get hurt on it!!! her favorite is the paperbag!! with my last guinea pif i put chirrios on a string DO NOT DO THAT... strings can KILL your guinea pig as it did mine, im thinkin of putting cherrios on a thin wooden stick, that would keep them amused! hope i could help!