[T.G]

if anyone had heard of the humidor,

No.

if it is a good one or not

Can't tell from the photos if it's veneer over MDF or solid wood. Doesn't matter really though.

if the small humidifier would be good for that space.

Yes the 2 oz gel jar will be fine, as I said to you about 25 posts ago, "just stick the humidifier in there", pending the owner's approval of course.

I think the humidifier is for 50 cigars right?

For use in a humidor, yes, typically that's about right. But it varies based on the space and the cigars - that jar could humidify 500 cigars in a coolerdor that seals well.

I have had it for a long time but I don't think they ever go bad?

The polymer can break down, but it takes many, many years, or even over a decade or longer for some of the formulas.

I just don't need it any more and would love to see it go to good use helping him keep his cigars at the correct humidity.

That's very noble, but there's a difference between giving it to someone who wants it and forcing it onto someone who might not care or want it. I have a friend whom I've given cigars to in the past - every time he would take them and leave them in the glove box of his truck for a month or two to dry out and get to "be the way he liked them". I wouldn't smoke them that way, but he sure enjoyed them like that