I had one thing suggested to me awhile back, for my supply of extra meds that I was hoarding for possible OD purposes.

I put them in a lockbox, put the lockbox in a closet in a spare room, on the top shelf so I needed a step ladder to get to it, then the key went into a smaller box, that I put into another closet on the top shelf, so I needed the ladder. Doing this, it would take me about 10 minutes to gert into the lockbox ittself. Also, the meds inside I had put into a large Ziploc and then taped up the bag pretty heavily with duct tape, so that I would need scissors to get into the bag.

Seemed extreme tgo med when it was suggested but it worked for me.