Since a coffee table is generally intended to add convenience and décor to your living space, what goes on it is really up to you.
Feel free to place useful items like remotes, reading materials or coasters on your coffee table, as well as decorative items like vases, small sculptures and a trinket or two. If you’re worried about items accumulating, choose a coffee table with storage or add a stylish tray, box or basket to your table for organization while still keeping items handy.
One thing to probably avoid placing on your coffee table is any device that needs to be plugged in—coffee tables are typically freestanding, and you don’t want to trip on cords running from the center of the room to a wall outlet.