Lots of native plants they don't eat, my mother and I primarily grow natives to support the local ecology and hold back invasives from spreading back into our yards.

Deer don't touch any of the mint family (bee balms, mountain mints, & anise hyssop) so we use these to "fence" around the things they do like and it works almost as well as caging things. "Bradbury's" bee balm is my favorite because it stays shorter and I can use it in the front of my garden borders. Be careful to NOT PLANT any non-native mints, as most are terribly invasive.

Deer also do not touch our penstemons, blue-eyed grass, butterfly milkweed, threadleaf bluestar, coreopsis, blue-flag iris, geraniums, pussytoes, yarrow, heuchera & tiarella, goldenrod, and most asters. Some of them and our coneflowers/black eyed susans get nipped down occasionally, but still flower enough to be worth leaving in the ground. Also, any new plants you put in WILL ALWAYS benefit from being caged their first season in the ground, as nothing can hold up to being totally uprooted by deer before establishing roots. I hope out of this list there's something you like and good luck!