A Kazoo will always bring a smile whenever it's played (at least in daylight hours, and outside libraries or religious buildings!), anyone who can hum a melody can play it, and makes a perfect and very affordable gift.
This one goes a couple of steps forward from the basic 1.50 euro plastic Kazoo that you can find in Thomann. Not only it's made of metal, but comes in a great package, a cardboard tube with vintage printing and separate instructions, that will read themselves in that 50's TV documentary voices. THIS is what makes it a perfect gift, still cheap but far more elegant that something that comes just wrapped in a small plastig bag.
It's very well made and sounds like a kazoo. I suggest adding a couple of jew's harps to experiment and enhance the fun!