AdvantagesFair quality, affordable, colourful, interesting to children.
DisadvantagesSharp pin, look cheap.
AdvantagesGood quality, simple to build and a nice toy.
DisadvantagesPerhaps a little too easy.
Advantagesdurable and sturdy, nice bright colours, rings link together
Disadvantagesthey squeak rather than "sing" do re mi, quite hard to make them squeak