I've had fun picking fake names for the people in my life. Some of them I chose without thinking much about it, some have more meaning. Using pseudonyms that could be real names ("Jake" versus "Huggybear") works really well for me.
Me, 30ish bi female, been doing solo poly for roughly 5 years. Gia, Clay, and Pike, my partners. Davis, ex/friend/"it's complicated." Eric, Gia's husband. Bee, Gia and Eric's toddler.