I can post these pictures on here because the recipients are all too young to use the internet!
Here is the tubular glockenspiel that I made Kesten for Christmas. There are lots of instructions on the internet on how to make them, like here, and here. I basically just used a pipe cutter to cut specific lengths of electrical conduit pipe and then built a wood frame for them. The holes have to be lined with foam so that the pipes will ring when struck with a mallet. I think Kesten will enjoy playing with it for Christmas.