I could see making an exception for marbles and astrojax, or silly putty. Hell, why not? They fit in your pocket, easier to haul around, tactile.
MrMerlin's comment also reminded me of the trippiest triptoy in the Universe- someone cute who's tripping too (and likes you a lot)! Words can't begin...
That Chinese art print needs to be on my wall. Very nice...
I also say leave the cellphone in the cabin and walk around without it. Too distracting, and God forbid someone calls
you and you reflexively answer it! More likely though is you'll drop it somewhere...