$15+ Kalimba
One of the best budget musical instruments to give for music lovers and beginners. It’s easy to play and has a pleasant sound.
$30+ Steel Tongue Drum
It’s like the poor mans Hand pan, easy to play and has an other worldly sound.
$10+ - Melodica
It’s like harmonica and piano in one. If you have talent even the cheapest you can buy still sounds pretty decent.
$34 - Stylophone
$30+ - ** Otamatone**
I remember that Melodia. When I was about 10yr old, the teacher in my elementary school had one. He used it to accompany us when we were singing. It was definitely easier to use than a harmonica.
Back in those days, teachers smoked in class!!! Though he was the one who warned us about smoking. Once he exhaled smoke through a handkerchief and said “when you start smoking, remember: that stain is never coming out again”. Too bad he did not pay attention himself. The big C got him in the end.
Not really a budget instrument I think, but on this forum the Laser Harp should be mentioned. Or is it Harp Laser? 
