I've spoken already about Solomon's tendency to name his equipment, but the anthropomorphizing of objects is a very human trait in general. Continuing the theme of their bizarro domesticity, Solomon and MC eventually "adopt" a pet of sorts in Nightbringer.
On day one, Solomon pulled something from his shoe and discovered he'd brought over a small, but pretty, pebble. This pebble, adrift in time like they were but a piece of their homeland nonetheless, was kept in case they'd need it for a spell or something.
Over time, constantly asking where the pebble was and moving it around made them grow a fondness for it, so it got the name Richard. "Richard" is always with one of them, and if they can't find him they'll be frantically texting each other like they lost a kid in a shopping mall.
Richard has a "favorite spot" on the mantle, goes on daily adventures, and he must be present at any (MC Approved) homecooked meals when the two eat together.
Every non-human they know thinks that they're really, really committed to a bizarre, but wholesome, bit.
