under-roo question

[rottendoll.livejournal.com]

so, i'm altering some underwear and i was wonder...
can you punch holes in cotton underwear to weave a ribbon through without it fraying? i mean without grommets, since i dont think they'd be comfortable, or do they have really smooth ones and wouldn't scratch you?

or should i just weave it through with a needle and not make holes at all?

btw, i've never really done any serious clothing alterations before. well, nothing besides *snip snip* *riiiiip*


oh, and while i'm making a post...
how hard would it be to dye a plain canvas tote bag?