I made/did some (of it)
I have experienced it.
Après l'accident, quand rien n'était encore sûr, j'en ai fait une copie.
After the accident, when nothing was certain yet, I made a copy of it.
— Trois couleurs : Bleu (1993)
I've made hundreds of them.
I did some.
What did I do with it?
I took care of it myself.
J'en ai fait deux fois plus que je ne l'ai dit.
I did twice as much as I said I did.
— Presque Célèbre (2000)
Je me rappelle plus ce que j'en ai fait.
I can't remember what I did with it.
— Une femme fantastique (2017)