Don't be a Sneaky Santa - Give Away Absolutely Everything!
Ajahn Dhammasiha brings up the metaphor of a 'Sneaky Santa Claus', who is not distributing all the gifts in his sack to the kids, but instead keeps some of the stuff for himself. That would be a bad Santa.
Similarly, we would be sneaky meditators if we continued to hold on, cling, and identify with anything at all that we encounter in our mind during meditation. Like Santa's task is to empty his sack completely by distributing all the gifts, so our task in meditation is to empty the mind completely from all clinging to emotions, thoughts, memories, past & future...; from any identification with anything whatsoever.