Well I had some ideas for the last one with the grapes.
I thought maybe she could be a typical school girl that walks through this garden or forest to get home every day its kind of a short cut. One time she sees his grapes growing and shes a little hungry so she takes a few. This is where it can go a few different ways.
One thought I had (this one a little bit out there) is that they aren't normal grapes and they make her instantly lust after the man who owns the garden she can't stop thinking about him in that way until she has sex with him. She tries to hide it but one day when she is walking home from school he is in the garden and she begs him to release her.
The other idea I had was that these Grapes are really delicious she ends up taking more everyday she goes through. The man has secretly been watching her and is furious that she is taking his grapes. He decides one day to kidnap her as she comes through and makes her pay for every grape with sexual favors.
this one is the forest idea the grapes belong to a demon and he uses them as a binding contract of sorts. When the girl takes a grape the vines begin to wrap around her undress her leaving hr for him to ravage since his powers are fueled by sex.
I don't know my ideas can be kind of out there but if you like them shoot me a PM