Plan Toy Concertina

[owlgal]

How to drive parents up the wall, give their child this http://www.youtube.com/watch?v=tDZJWWcJnXA

[gcoover]

Reminds me of my old band!

[Aquarussell]

I have seen those on eBay. I should have realised that they are Anglos from the strap, but I see they also have different notes on the push/pull as well.