Unlike cannabis, you can’t smoke it, so ingestion is an obvious choice. I suppose pills could be an answer but kids eat pills all the time too. Granted, perhaps less enticing than chocolates but still a problem.

The better option would be to forgo purchase of these substances until you're ready to consume them. Legalization makes this a reality. I could go to the store, buy the drugs, then drive straight home and consume them in a safe environment.

The prohibition we have currently is what tempts people to stock up all at once and ultimately leads to higher risks for children finding/consuming them while mommy and daddy are at work.