I have a set of the hole punches that Scooterman linked to, and have been underwhelmed... They don't do that great a job, although it may in part be that it is a cheapo HF set...
My tool of choice for precise holes in thin stuff is one of the many variants of this:
https://smile.amazon.com/Neiko-02612A-M ... 0002T87CW/Works on pretty much any sort of thin plastic, aluminum, copper leather, fabric, etc. It will even work on light gage steel such as electrical enclosure boxes....
It comes with a bunch of interchangeable die sets to make different holes from about 1/16" to about 1/4" diameter
It is mildly tricky to get the hole placement just right, so what I usually do is use a prick punch to make a dent at the desired point. The punch dies have a small point in their center, which will then fit into the dent....
ex-Gooserider