Yes...they are a Texas tradition...and I was thrilled when we moved back home to Texas, so maybe my dd can enjoy the experience. Mums were one of my favorite memories from school.
No...they don't weigh much at all. My school (and many others) did not have the traditional homecoming dance. Mums were worn to the football game (which almost EVERY student attends here in Texas), and then out to dinner with your dates...although some schools did have dances after the game.
Most girls asked their dates/boyfriends for the fake flowers, because the other tradition is that you hang them on your bedroom wall once the day is over....it's kind of like adding your "school spirit" to your room.
The great thing about them is the "toys" you add to them. Whatever activity you and your boyfriend/date are involved in....they actually make a little gold or silver "toy" for that. The toys get tied to the ribbons, along with little jingle bells. Then, your name goes on one ribbon, and your date's name on the other; and, finally "Homecoming '06" (or, whatever year) gets added to another ribbon. When all is said and done, it is a great souvenier of your high school days. My mom still has all of mine and my sister's mums.
Most florists make them, and I have even seen them at the grocery stores recently. If you want to make them for less $$$$$, go to a Michael's nearest your dd's school. They will have all the supplies you need, including ribbons embossed with your dd's school name on them.
Everyone else in the civilized world thinks they look really stupid...and, they kind of are. But, it is a grand Texas tradition...and seriously, when you see 400 girls in the stadium wearing them all at once....it makes for a very festive evening!!
Oh...you definitely have to attach them to the bra strap. Otherwise, they ruin your clothing.
I am really happy to hear that girls are making these for themselves. That never happened in my day.