Children live in the same world we do. To kid ourselves that we can shelter them from it isn't just naive - it's a vanity.
What I do know about junk drawers is that you don't just go diving in looking for what you want. That's an easy way to get your finger pricked on some random thumbtack or rusty edge. Tou respect the junk drawer. You push its items to the side, purposefully and considerately, until it decides to yield the item you were seeking.