I taught Honey's retrieve by building from the clicking the pick up... it was the way we were taught at obedience.
It's actually given her a really good retrieve - she can be reluctant to give the item up (which was always her problem) especially when she is getting tired, but I find if I click and treat a few "hold it"s then build up to a "bring it", a few more "hold it"s and she's willing to obey the "give".
Also wrt to tuggy toys, Honey definately knows what she is allowed to play tuggy with, and we control when the game starts and ends... even when she is being reluctant to give something up she never attempts to tug with it... obviously if you don't want to risk it, I can completely understand, but it shouldn't lead to problems with stealing toys or guarding stuff...
If you're looking for other stuff to do out and about, another thing we've started doing is squashing a couple of treats onto a tree stump for a quick "find it" game.... Honey loves it!
