Do you ever collect things, not because you are an enthusiast but out of habit ?
I heard on the radio about a woman who collected menus posted through the door for takeaways. Her husband said she had hundreds of them. One day they decided on a Chinese takeaway, she ordered by number over the phone. When all the wrong food arrived they realised it was an out of date menu and all the numbers had changed. 
I have 2 drawers full of pop socks, tights and assorted footwear, many are just single socks 
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, it seems wasteful to throw them away, and they can't go in the recycling. I now have quite a collection in our "office".