Best riddles with simple answers

cleanpoemssimplelogic

The front of me is the source of a song Or to kiss with a fervor of love lifelong. My back is a plant fit for a queen, Crafted by needle, chemical, or machine.
Necklace
74.63 %
71 votes
tricky

I'm in you, But not in him, I go up, But not down, I'm in the colosseum, But not a tower, I'm in a puzzle, But not a riddle.
The letter U.
74.36 %
56 votes
cleansimplewhat am I

I sometimes come in a can but I'm not food. I sometimes come in a bottle but I'm not a beverage. I come in different colors but I'm not a rainbow. I'm sometimes used with canvas but I'm not a tent. I'm used with a brush but I'm not toothpaste. What Am I?
Paint
74.28 %
51 votes