This year my kids wanted an easy fun treasure hunt, so what I did was fill disposable gloves with treats, blew them up, tied them and then hid each pair with a mask. Each kid got a hand as a handout. We have to do it this way because we live in Sydney Australia where Halloween really hasn't taken off. Hardly anyone knows when it is, let alone has candy to give out.
Here's some pictures of the better mask/hand combinations hidden around our house and garden: