[MargaretR]

I bought some chestnuts at a supermarket. One fell from the bag into the trolley at the checkout. I was fetched up to believe 'waste not want not' so instead of leaving it in the trolley, it was easier to fling it into my handbag as I was paying for the groceries.

I forgot about it until, soon after, I won £1000 at bingo in Burnley.
I seemed to be winning (small amounts) more often and within months I won £9000 in one go!

My lucky chestnut stayed put in my handbag until it eventually disintegrated.
It had lasted a year. I didn't try replacing it - you can't deliberately conjure up luck like that.