Hi
My daughter had "sticky fingers" at pre-school/grade R. I think it is just a stage they go through. But I do feel that punishment by the school/parent is the best way to discourage this season they seem to go through i.e. no baking on Friday
My daughter used to take the most silly stuff. she had a thing for erasers at one stage (probably because i used to moan she always lost them so then she amassed about 15 by redistribution of eraser wealth!)
Also around age 5 ish, she stole a sweet from the local 7-11. This was on top of the sticky fingers at school and I'd had enough.
I took her to the friendly police station down the road. And the police man gave her a lecture. We went into the charge office and I explained with some winking on my part, that my daughter had taken something.
We then drove back to the 7-11 and with great shame, she had to return the sweet.
She pooped herself. And assures me she has never stolen something since.
She's 12 now and we laugh about it.
Abit harsh perhaps. But she learnt her lesson quick quick.