Don't you love that feeling when...., AskMe's thinking about specific enjoyable feelings.
Great first post from needlegrrl, A good handwritten letter is a creative act celebrating April as (US) National Letter Writing Month.
Also see hippybear's Metatalk thread April Showers Bring May Flowers about posting "simply happy, joyous, silly, or positive posts" this month. (Also open to discussion for a May posting theme.)
In Ask Metafilter, beijingbrown asks about "poems or lines of poetry about love that is awkward, hesitant and quiet - filled with silences and mis-timings" ... while in other quests for words and sounds about feelings, thoughts and things, switcheroo seeks "songs that pick me up and make me want to live again after a long day of work," picklenickle is looking for good songs with lyrics that are hella gay, and slidell searches for children's rhymes and songs that are free of ghastly, scary, and offensive things.