Has it occurred to you that canned air is...air? And that it costs at least $6 a can? And that this can doesn't last long at all? These facts have worried me, and I have used this expensive air very stingily. But as I've slowly morphed into a sewing machine geek, I find myself offended at the slightest bits of lint and dust on any of my machines. eBay seller Vacuum Stop offers this set of "micro vacuum attachments" for $9.95 plus $4.95 shipping, and points out that it would be useful for electronic equipment. And how about detailing cars? Dusting antique dolls? Reaching the crevices in your toaster? The mind boggles.