Yeah that does get old fast. Whenever I'm smoking with unmotivated smokers I at the least try to coax them into playing some kind of game. Bong Monopoly is a personal favorite. Any game is good though because they force you to concentrate and think. Trivial Pursuit is another fun game to spring on stoned friends. As far as outside activities go, swimming is my favorite when high. Ever been on a stoned horse back ride? Put that on your to do list, it makes for a wonderful experience. Nothing fancy, just a regular beginners trail ride makes for an amazing time while high.