We were too poor to afford instruments so we made a sort of kazoo. It consisted of a comb and a piece of waxed paper. The William Tell Overture was a bit difficult to master, but Old McDonald was doable.

One of our home made toys was an old wagon wheel tire, (made of steel) and a hand held fork made of wood with a spool between near the end. We would insert a nail through the handle, through the spool and through the other end of the handle. Once we got the rim turning it was easy to keep it going with the spool keeping contact with the rim.

We also made guns out of wood with a clothes pin (spring type) at the back. We would stretch a jar rubber from the tip of the barrel into the clothes pin, and when the pin was released the jar rubber would fly, but not very far.

Another thing, we made bows out of green limbs and we used the old flag sticks from the cemetery after the flags had been torn to tatters by the wind. By then, they had been so bent by the wind that they would not fly true, but the bows were so weak that they couldn't drive an arrow anyway.
Screw the good old days.