Today we went to the Sydney Royal Easter Show. It was a lot of fun, but it reminded me of a travel tip that I'd like to share. When in crowds its always good to keep your bag shut in such a way that others can't help themselves if they so desire. Crowds seem to me to be just the sorts of places light-fingered people might like to acquire new possessions by unscrupulous means...
The backpack that I usually carry on such occasions has a zip with no cover over it, so the zipper pulls are on show for all to see. To discourage likely thieves, we put old split rings (ours are actually curtain rings) on the zipper pulls. Its not going to STOP anyone, but it is likely to slow them down. It does make life a little harder for someone wanting to help themselves, and sometimes that can make all the difference.
It does also slow you down when you try to open your own bag, but that's a small price to pay. You can either slip the ring off one of the zipper pulls, or pull the zipper apart between the pulls so that it sort of bulges open enough to get in to get what you want.
Its cheap, light and easy, and looks much less like overkill than putting a lock on your bag for such a day!
Our kids also used their bottle bags today - lovely to offload their water bottles and the weight they entail to them, rather than us having to carry them! Towards the end of the day The Bookworm said to me "I'd forgotten I was even wearing my bottle bag." Ah, the usefulness of good (though admittedly not very attractive) design!