My heart is suitably warmed right now. Some things that do this:
Hugs
Watching E sleep
Seeing elderly couples hold hands
Watching people eat a packed lunch (I know, this is weird, but seeing someone unwrap a sandwich and then open a flask of coffee brings me so much pleasure)
The look on E’s face when he sees me after we’ve been apart for a few hours or days
Animals dressed in clothes and/or glasses
This.
The random musings of Neen 
Oh yes. It’s got me thinking what warms my heart…