>>14151897ravensburger makes very solid puzzles that are normally interesting but also feel nice. The tactile feel of a puzzle seems unimportant but it does contribute to the experience. If youre really into it it helps you zen out, and focus on what youre doing. A weight to it.
I normally do 1000 piece puzzles, but Ive done 3000 before. Its an order of magnitude more time consuming.