Cassettes, Nintendo controllers, Game Boys, Motorola cell phones, Floppy Disks, Sony Walkmans, Boomboxes, and Rotary phones are among the cement hand-cast 'modern fossils' by artist Christopher Locke of Austin, Texas.
Pretty sure you could dig a few of these up in the back of my closet.
Asportatio acroamatis (Cassette Tape):
Ludustatarium temperosony (Dual Shock Playstation Controller):
Hilarofustis atarium (Atari Joystick):