I try and focus on one thing to block everything out. My boss showed me a great game, Armadillo Run. It's a weird physics based game, nearly a sand box but without the complete freedom.
It helps me to play it, just take a while and focus on anything but what threw me. You guys all sound like you like no stimulation, but for me at least, I find narrow stimulation along a well planned path to be more calming.
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Every time you think you've made it idiot proof, someone comes along and invents a better idiot.
?the end of our exploring, will be to arrive where we started, and know the place for the first time. - T.S. Eliot