So here is some neat information for you all. Did you ever had trouble with the 2008 canister boxes? Was its lid been too thin for the parts you are storing inside it. Fear not, if you have a Knights Kingdoms Constraction set canister (The second year of that line to be precise), you can use its lid as the lid for the 2008 canister box. The canister opening and the lid fit perfectly.
I realized this today when I was setting some old boxes for the new 2015 sets, and I really like the compatibility thing.
Have you ever encountered similar things with Bionicle and Hero Factory or similar boxes/canisters and lids before ? Obviously if they are the same canisters (like the 2001,2002,2004 canisters), the lids would fit as well.