I am terrified of becoming a hoarder...I love to collect, but I don't like it getting past a certain point. We have 1 very large room which we share. Computer and quilting one side and my husband's art stuff on the other. My personal "rule" is nothing stashed in grocery bags or unidentified boxes and carpet must be visible. Before you ask....we don't draw a line down the middle...though if I sneak a box of fabric over his side he puts it firmly back where it should be!
It's great you are the recipient of all these goodies...but selling or passing on the bits you aren't totally in love with would be a great idea. Sad thing about hoarders is, nothing gets used or loved, and after so many years and odd storage methods it all just becomes garbage.
Anyway Mousie have lots of fun with your goodies...