I just received a "Woodstock Kid's Concertina" the other day and thought that it might be of interest here. It is a made of plastic with no wooden parts. It has brass reeds and is anglo type instrument; set up more like a melodeon than a concertina with 7 buts on the right side and 3 on the left one being an air valve and the othe two a bass note and chord. I got it through Mud Pie Productions but it is made by a company called Woodstock Percussion, Inc. www.chimes.com
This isn't going to hurt any of the current builders but for $30 it's cute as a button. You can see it by going to: http://www.my-occ.net/wp/cat/music_index.html It is at the bottom of the page.
Have any of you seen this? By the way it's made in China.
Howie