Tiki Topper Reward
(from registering The Sims 3 Island Paradise)

This is a custom version of the Tiki Topper Reward table lamp that players can get for The Sims 4 when they register The Sims 3 Island Paradise.

Since there's no way to unlock the item, like with the rewards from recent live events, I've set it up so that if you put down a lot that contains the original item but missing it, the game replaces it with my own custom one as a fallback object.