I have a small (about 12" high x 10 " wide by 8-9 " deep) 3-drawer unit I keep all my sharp items in(rotary cutters, scissors, all needles and pins). When my grandchildren came and slept in the sewing room I simply carried this unit to my bedroom so there was no worry about them getting into those things.
I also use a telescoping magnet wand to pick up all pins, etc that may be on the floor.