Q.What is this???
I love nursing houseplants. This is a neighbor’s cast off. What can I do to bring it back to life?

Certified GKH Gardening Expert
It looks like a Lucky bamboo that wasn't so lucky. They are usually grown in a ceramic vase with rocks and water, but you can grow them in soil, too. Trim it back a bit to tidy it up, which should encourage more growth. Here is more:
https://www.gardeningknowhow.com/houseplants/lucky-bamboo/pruning-lucky-bamboo-plants.htm
https://www.gardeningknowhow.com/houseplants/lucky-bamboo/growing-lucky-bamboo-indoor.htm