^@Aanchir; I have some Knight's Kingdom II canisters from the second year, and I remember they stack, but did they fit plates? Did you mean the LEGO logo at the top? In my memory it does look like they could fit a 4x4 plate. Also, those canisters, if I remembered correctly, has holes that fits lightsaber rods, horn pieces and other similar bar connections.
In my personal, rather selfish, anti-environmentalist opinion, I love canisters and hate bags. I'm sorry, but most of the few bionicle sets I own comes in canisters-my Bohroks, my Gali Nuva and my Toa Inikas. And I really hate the fact that It's so hard to open bags without mangling them or ruining the top of the artwork. I remember that the Inika packagings were canisters with stickers sealing the top and the bottom halves. What I had done was cut through the stickers to open the canister. The art more-or-less re-aligns when you put the top back. But with bags,
how should I open it? Chop off the top? Create a precise incision? Because I really want to preserve the great artwork at the top of the Invasion from Below sets...