I feel the need...
...to admit my shame.
Sometimes I have re-bought items I know I already own because finding them in the loft full of junk is a daunting task. Cables, little widgets, connection converters etc. I know for certain I have at least 1 or 2 of them but a 30 second ordering spree on eBay will yield the item with less effort.
Someone please make me feel better and tell me i'm not the only person that does this? :s