I made a ping pong table using armor stands with iron helmets on (with commands) and signs with carpet on top for the boundary line thingy : r/ Minecraft
Ping pong table by jgerecke | Minecraft Build Tutorial
How to make a ping pong table in Minecraft | By Rafael PH CRAFT | Facebook
Minecraft: 3 Table Games Building Tutorial (Pool, Air Hockey, Ping Pong) - YouTube