Translation of "Wymyśliłem" in English

Wymyśliłem abstraktomierz.

I've come up with this system which I call the abstract-o-meter,

W końcu wymyśliłem, jak pomóc bratu.

I had finally figured out how I was going to help my little brother.

Nie słyszeliście o tym zawodzie, bo sam go wymyśliłem.

And if you've never heard of it before, it's because I've made it up.