The blanks come in little boxes of 5, not in the foil packs.
I've been using medium size binder clips - the black ones with the metal arms (holds 20-30 pages, maybe an inch long?). You can steal from your office or get at any office supply. Remove one of the metal arms and use it as a pry device. Be careful, the first time you pull it off, you need to rotate slowly and use some force. When it comes out it might fly! After that you should be able to get it off with your fingernail. (The white ring and the clear ring go back in concave down.)
Alternatively, a 3ml syringe and 16ga needle from the feed store (~$.80) will fit in that hole. I put in .5ml initially, but I think the blanks can hold more.
To hold them, I take off the rubber sleeves, leave in the stopper, and place them into a .9mm PPR plastic ammunition holder. It keeps them upright so I can fill and let sit. I'm thinking a .45mm holder might accommodate the plastic sleeve, but I don't have a .45, so I haven't tried it yet.
(Note to self, go buy a Baby Eagle for an excuse to get a bigger ammunition tray.) i.e. excuse to buy new gun so I have a $.30 plastic tray to use for filling. (This is completely justifiable in my mind. See, I'm from Texas?)