Biggest Loss as a collector?

What's the biggest lost any of y'all have had collecting Ninjago? As someone who collected a lot of the og sets when they were first coming out the most painful thing has been remembering all the cool sets and figures I've lost to the bin or have been lost as I've grown up. My biggest L was losing all the original ZX and DX as well as some of the pilot ninjas I had as a kid. About a year ago I sold all of the Skeleton and snake Minifigures I had thinking I wouldn't be into Ninjago ever...