Do you use these Event Rewards ?

I've used most of these. Definitely given Practice Makes Perfect to a few Sims and Grouch, but need to dole that one out more (problem is, I have to cheat Sim points so I can remove current traits to put any new ones in there, like Grouch.) I've given the Rings tatoo to a Goblin servant as a brand of punishment for going against the Fae King's laws. I've put Scare Seeker on a few lots and used the heck out of Prowling Peepers when Occult eyes weren't available for regular Sims or malfunctioning. Haven't experienced Enhanced Klepto yet, though I have many Klepto Sims. 

And for a bonus: Used the eyeball ring in many outfits, mostly for Occults as "evil eye" curse items or as the eye of some creature they defeated or trophy from someone they ate. (Lol)