At the first one I got an Aulos tenor recorder at a reasonable price (£8). It's not a great instrument but then I'm not a great player either! I also got a toy London Routemaster bus for Theo for 50p. It has become one of the "must have" toys.
This weekend I got a toy for Theo that I was too tight to buy for him new. My nephew has one and T was very taken with it when we visited last Christmas but I wasn't spending £36 on this battery operated toy. Got it for £7 at the boot sale at a local garden centre which we only went to because they also had a "country show" with a local viking era re-enactment group present.