You get some really unique and really cool puzzles! I'm curious-how often do you revisit, or pull puzzles back out? I'm imagining that they're quicker if revisited, but wondering how well you remember them if you do re-do!
It varies a lot. Many puzzles I solve once and then pretty much never touch again. I've given a lot of such puzzles away in the past. I then have a small set of puzzles that sit on my desk and I fiddle with them constantly. The Hanayama Cast Cross is one of my favourites for that. And then I guess in between those two extremes there are some puzzles that I'll occasionally take off the shelf and try again with -- in some cases I've done that and found that I can't remember anything at all about how to solve them!