I just got my own. I had 2 toolboxes that had the capacity to have padlocks attached. One held all my dangerous meds and went to therapy with me (I always felt self-conscious but nobody seemed to really notice) and the other stayed home and had one (later 2) weeks of at a time in it. That was the one with the code I could open myself when it was med-time.

If you have someone at home to help with meds they'll probably suggest doing something pretty similar but with your meds given to you daily from a locked box. I just didn't have that kind of help so we did it the other way. I was on a really strict safety plan; for quite a while I had to give up sharps to my therapist as well and I even had a few weeks I wasn't safe enough to shave my legs.

Things are much, much better now.