I remember they have CA$1/$2 coins, but haven't a clue what they look like or more importantly how large they are. A quick look on wikipedia shows what they look like, and that the $2 is bimetallic (seems always helps distinguish currency quickly! Wish the US would have considered it for the US$1 coin, but the new one had to be vending-machine compatible with the useless old SBA ones.)

Of the places I've gone regularly, the UK seems to do high-value coins best -- the 2-pound coin is bimetalic and honking huge, and the pound coin, while not huge, is physically solid enough and distinct enough to be difficult to mistake even fumbling in a pocket.

It's interesting that the same places who've adopted the newer and more durable polymer banknotes are mostly the same ones that have gotten rid of their lowest-denomination bill; the higher durability would seem to me to eliminate some of the advantage of going to coins for that.