I just grabbed a thin ice pick and stick it in the stopper hole enough to pry the stopper out—stopper is soft plastic so no worry about damage to it. I then made a minor mess pouring Clubman talc into the bottle; a funnel would have helped here. Then just push the stopper back in and you’re in business again. Here’s a pic of the stopper on my OS talc bottle, in case there’s different types.
That won’t work on this type of bottle since it’s not a removable stopper