I imagine the Striders living in a complete mess, with barely enough space for them on the bed. Everything else is bundled sheets, duvets, smuppets and an uncanny number of pillows. After any rough showdown on the roof they spend the night together/platonic family shit no sex/ with Cal being there too.
Also, Bro wears dogtags with the date he found Dave on and his name
Dave also wears ones, his being with his and bro’s initials