Toy drives would seem to be the obvious answer, but the puzzles in question are meant for adults and might be too hard for kids.
What about a rehab facility? People recovering from brain injuries may benefit from it, although, you didn’t mention how complicated the puzzles are. Coloring and puzzles can be good therapy.
I worked in a church pantry/clothes closet that also offered toys, books, and games. The games went fast. I remember seeing puzzles come in and leave rather quickly too.
Do you have charity shops or local jumble sales who could sell it to raise money?
Correctional facility. Some of the juveniles I work with love jigsaws. I imagine adults do them too when they’re locked up.
(The wooden construction might be a safety issue? Possibly? Hard to judge without looking.)
I have a bunch of Liberty puzzles. I doubt they’d be a safety issue in jails. (Maybe for small children.)
As for where to donate it, are there high class thrift shops in your area? Ones that could sell the puzzle at a price low enough to be attractive and high enough to make them some money. If I saw that puzzle at $20 I’d snap it up.
I donate a lot of my regular puzzles to thrift stores where they sell them from $1 to $3, but I’d wonder if they would be able to appreciate yours.
An adult daycare?
A mental health hospital? (My daughter is in a residential therapeutic community, a farm, and there is a table for jigsaw puzzles in one common area).
Sell them on ebay and donate the proceeds? I see Liberty Puzzles selling on ebay for a substantial fraction of their price new.
Or retirement homes, nursing homes, prisons, recreational centers, or anyplace else where adults go to hang out would be okay places to donate them.
Whoa! Some of them seem more expensive than new puzzles. Bump that $20 up to $60.
BTW, these puzzles are not really good for many of the proposed places. They have non-standard pieces, and are a bit tricky to put together. They are a far cry from your standard 500 piece puzzle. I don’t think they would be easy to do for anyone with the slightest touch of arthritis - the pieces don’t go together nearly as easily as a cardboard puzzle.
Not as hard as I understand Stave puzzles to be, but kind of challenging.
I own several Liberty puzzles, and often share them with friends, admittedly, friends who are younger than most residents of nursing homes. I find the odd shapes often makes it easier to find where to put a piece than in a “standard” puzzle, although actually placing the piece can be a little fussy. You certainly can’t just shove it in.
I do think you can help more by selling them on-line and donating the proceeds, though.
I would not give them to a kid-oriented place. They are okay for some older kids, with supervision, but not for most kids. Honestly, their best use is for adults age 15-70, to do in a group, as something to interleave with chit-chat. They are also nice for a quiet evening at home, with or without company, and with or without the radio.
So I just found out that there’s a women’s shelter my mom donates stuff to, I’m going to look into that.