Any ideas for my bunny's cage? She has to be in her cage for a lot of the day, so I need ideas for boredom relievers for her?

There are a number of boredom buster ideas at my site here:
http://rabbitsindoors.weebly.com/boredom-busters.html

However, what options you have will depend on the size of your cage. Once you get a larger cage, you'll have more options. In the small cage you described earlier, there isn't much to do to keep her occupied. Small toys only go so far.

Some bunnies will play with small wicker balls or chew blocks/twigs. Some won't. TP tubes stuffed with hay is often a favorite.

But the best you can do is work on creating a larger space for her. Then she would have space to explore, binky and lounge. Then you could use cardboard boxes with doorways cut out, tunnels, etc. to help keep her stimulated.

Do be sure to check the site for further ideas.

Do not get a bunny if it has to be in the cage for a lot of the day.

Go on youtube, StormyBunnies and Rabbits101 are great places to learn how to make DIY rabbit toys.

Plenty of exercise/play room with some toys. Better yet, a playmate. Plenty of out of cage time when you are around.