In a rut

I know I just posted about how all this motherhood stuff is finally clicking. And it still is for the most part. Lily's a champion sleeper, she has no eating issues now that the reflux has been figured out, and she is SO good natured. The little tiny problem I'm having right now is boredom. I know that's awful, but it's true. I feel like I'm running out of things to do with her. We can play in the jumperoo or with toys on the floor, but then what? We're using just one car to try to be more eco-friendly, so when my husband is working, we're kinda stuck here. Any ideas for things to do with a 6 1/2 month old? Great toys to invest in? Silly games to play? I'm not sure how much longer I can listen to the songs on the jumperoo...they're invading my dreams at night. :)