I've not purchased any new plectrums since about 1980;
and still have a few of that batch left [and some even older very well worn and rounded favourites]
which I still use and keep in the same vintage mid 70's 'Strepsils' tin
I started using in my mid-teens.

I rarely lose a plectrum, but have found enough of other guitarists lost strays
to have been kept sufficiently supplied for nearly 30 years..

..thanks for all the 'donations' guys !!!!!

[my mum's family lost their home and every possession
when they got bombed and evacuated in the Blitz,
so she brought me up to respect thriftyness
and not be too proud too pick up even the least valuable coins
and reusable items found lost and discarded in the street....]