Okay, got pics..
^This is the crochet sampler - I'm thinking you probably want something with a looser stitch as well as the big holes, but this can easily be acheived by either making lots more holes or by using a much thicker crochet hook (you can see the thickness of the hook I was using - it's poked into the ball of wool at the top of the first photo).
^This is something else I'm currently working on which isn't actually knit or crochet - it's something my MiL is teaching me.. just a craft-type thing using yarn. But yeah, it's a great way of making random holes using yarn and we were just discussing yesterday whether we could use this technique on fabric, to make weird, netted sections - only thing is, you'd have to have a frame to work on.. so if you used strips of fabric for the four edges of your piece and pegged them down somehow in order to get the tension right to make something like this.. then that might just work if you were making a shawl or something like that?
Anyway, it's worth a try.. I'm certainly going to give it a go!
Sorry about the blurriness of the photos - light levels are a bit pants today.
Hope this is what you're looking for?