My first pet

Thanks to lovely centerpieces at Relief Society enrichment, I got to have my first pet. I carried it home in this red cup. I was REALLY careful and only lost a little bit of water, not the fish.

We put it in a vase and I love to sit on the back of the couch watch my fish swim around and around.
I am planning what to put in with the fish...laundry, toys, or dishes. Suggestions? What do you think will make the fish feel the most at home?!