Hmmm simple things ,ok here comes my list:
Pizza
BBQ
Hamburgers
Fries
PewDiePie
Tea
TV
A good documentary ,when it is not biased etc
A good parody or a YTP or a good comedy sketch
Idk if it counts as a simple thing ,but when i level up in a RPG
I achive something in a game,like max level,best gear or something like that
When somepony compliments me
Snow