No, I didn't use one in the sense of actually paying something with them.
I did track a few when you could still receive them from the banks. However, I always exchanged them for other notes at another branch of the bank.
In 2007 (or around that mark; I'm not 100% certain), my parents sold the car we had back then. The new buyers paid in cash and the majority of the notes were

. But my parents didn't do anything with them apart from depositing the notes on their bank account.
Now with the

abandoned and

being the largest note, I've used

for purchases of >5€ a few times, but only at automatic cash registers at my local supermarket. This normally gives 9x

,1x

and 1x

as well as some coins
