Not to toot my own horn, because it's small, and makes a whiny little sound, but..
https://www.youtube.com/watch?v=w2JcwFXJ6KQHere's what I did for a really small lock. There are other ways as well, but I didn't have any strong paper clips, and I like to figure things out for myself rather than "cheat". Not sure if you can cheat in life hacks, but.
My wrench wouldn't fit to the top of the keyhole, my thin wrench kept slipping off the hole, and my thick one hit the front pin, and blocked the keyhole. and both were way too big to insert into the bottom.
You can pretty much see the shape of the hairpin in the video, but basically
You take the hairpin, and open it and make it straight.
Then bend a handle on it on the other end.
Then take pliers and bend the end of the hairpin sideways (hard to explain, so check the vid out).
That gives it enough width to attach to the keyhole, and you can just fit the pick inside a really small lock.