Love this thread 
My Nana was def one of these. For starters she kept everything in the box and packaging that it came in. So hoovering or ironing involved a lengthy exercise of hauling the boxed item out of its cupboard, taking it out the box, unwrapping it etc before wiping it down after use and repacking it.
She insisted on "filling the bin" the day before collection which usually meant that she would be out in the garden hacking bits of tree down specifically for the purpose of filling the bin. It had to be plant material though, no other rubbish could be found to "fill the bin".
She used to wait for the postman to come and then stalk him up the road picking up the elastic bands that he dropped. These would go into a special jar for postman elsatic bands, which must be kept segregated from "bought" elastic bands.
She had a special jar for those straws that you get on orange juice cartons. The juice could never be consumed straight from the carton 
; the corner must be neatly snipped with the carton snipping scissors and the juice poured into a glass of exactly the right size. The straws were placed in the jar and never used.
Envelopes were cut up into small squares onto which she would write in tiny handwriting her weekly shopping list. She would shop in the order that the items were listed so would often pick up carrots, then march to the other end of the store to get lemonade and then all the way back to the veg aisle for potatoes. She would never deviate from the list incase she missed something.
And she kept everything. She had tins for all manner of random bits - buttons, packets, bags, string. If you mentioned needing to buy something be it glue, knickers or food item she wou;d always say "Ahh hang on" and disappear only to return half an hour later with whatever it was you needed, always in a little plastic bag and looking like it had been lurking in a cupboard for a good ten years!
There are hundreds more but Id be here all day! Lovely woman though, I do miss her 