Wooden Puzzles Anyone Remember Those Wooden Brain Teaser Puzzles? How Do You Solve Them?

Anyone remember those wooden brain teaser puzzles? how do you solve them? - wooden puzzles

I mean, it used to index a number of restruants in the 80s, the wood in various shapes such as triangles or squares or other and golf tee PICES were made. Well, I'm one of which resolved with a triangle on Easter, I wonder if someone shows a way or a website, as we know, too?
Thank you.