I built a (heavy) chest that is kept outdoors to store my children's toys (I learned a lot of lessons from this build, such as the importance of rebating hinges..).
I am concerned that my daughter is going to shut the lid on her and/or her brothers hands and wanted to ask advice on the best way to avoid this from happening, with the following setup:

A simple solution would be to lock the lid and only open/shut it when supervised - however I would prefer to give them the opportunity to access their toys whenever they want.
Another solution would be to add some feet or stoppers to prevent the lid from closing fully - however I would prefer to keep rain and/or spiders away from their toys.
Another solution would be to use soft close hinges to stop the lid from closing quickly - however I don't think they would work well with the current hinged setup or weight of the lid (marine plywood cladded with decking timber).
Is there another solution I am over looking, or how would others solve this future problem?
Thanks