I'm pretty sure the PC dude will be bouncing back, and forth between Pomona, and Ontario for 12+ hours tomorrow. I'm thinking your best bet if you're down here during the day, would be to put your items on his front porch, which they'll be safe there. If you come later in the evening, still do the porch thing, since the PC dude will probably be sacked out on the couch.
That is one frickin' awesome PC dude.... -BIG DAN
EDIT: AND GOOD LOOKING!
You could probably sneak in, give the PC guy a and put the items on his lap as you out the door.