Suprisingly she got it!
We got a pack of raisins. Dd and dh were in the kitchen, took the raisins out and put nails in.
When dh took dd into the living room he said what will ds think is in there. "Dd said raisins "
I really didn't know if she would get it or not!
I mean she does tell lies, hides things etc but it's been nice to actually test it properly iyswim