If you really want to do pen thru coin buy Eddie Gibson's gimmicked £1 coin. You can use PENetration (pen thru banknote) and you use a 1p or a 2p (a 'copper' coin) but requires a bit of finesse to carry it off, much easier to buy Eddie Gibson's cig thru coin, as for cig, read anything of that diameter and fairly solid, a rolled up fiver goes thru the coin just as effectively - finding a smoker these days is like looking for hobby horse s**t
so if you want to do both, my advice is to buy both, however you can do pen thru coin if you buy PENetration or similiar but only with copper coins - you can figure out why probably.