I use them in several lesson plans through the year (find all my lesson plans using wands HERE) and in nursery (details on music in nursery HERE). The ones I have pictured are from a company that is no longer in business but you can now purchase these at dressupwholesale.com WAHOO! There are tons of color options HERE and HERE.
Wands also come included in my Music Bag Starter Kit as well! If you are interested in more details on a Music Bag, check them out HERE.
I have a post with more details on ribbon wands HERE including ideas on how to implement them in to singing time.