Out The Door.

During our time with Mason visiting, if the front door was open for any reason he would make a bee-line for the outdoors. His favorite thing to do once out there was to stare at the motion-activated Santa head that we had hanging on the front porch. He couldn't wait for it to go off with Santa saying, "Ho ho ho! Merry Christmas" then followed by a fun (ok, after a few weeks of it being fun, Ric began to think it was getting annoying) Christmas jingle. Mason would then clap his hands for more.
When the doors were closed his favorite thing to make a bee-line for was the stairs (the christmas trees didn't seem to attract him too much) and he would go up as fast as he could before someone took him off of them as he didn't negotiate the going down very well.