If I am remembering correctly, it was a phase my Winston went through. When we would take him outside he would investigate EVERYTHING and it would all go into his mouth unless we were fast enough. We NEVER had trash in our yard back then, lol. Inside too- if anything hit the floor we had about two seconds to beat Winston to it, else he'd try to eat whatever we dropped/knocked over. The good news is, this is a puppy phase. The bad news is, you have to manage to keep her from ingesting 99% of the things she finds.
Training would help immensely. See if you can train her to "drop" things when she picks them up. When she gets it, your life will be SO much easier.