My DH has a few hobbies which we share, but then he has ones that just make me shake my head... We are roleplaying gamers, and if you are even vaguely familiar with that, some people go to great lengths for their characters backgrounds, home lands, type of castle they live in.. OR when they create something such as a world.. what critters live there.. terrain and so forth. My hubby does some stuff along those lines... but to a new extent... For one campaign he created a zeppelin, a BIG blimp.. but he researched online the latest developments in engines, fuel, metal structures, kitchen appliances, furniture, flooring, and covering/skin for his ship. It would be smaller than the big ones of WWII, but the company that made those is in business again. He researched photo cells that can be used for solar power, a thing called aero gel, and even propellers for the ship... He created it, created drawings of it.. This is a thing you could build, and market...he could get a job with the zeppelin company for the creations he has done.. And what does he do with this thing.. uses it in a sci/fi modern day "Stargate" type game. In his old "Risk" type game, called the "Nations" game he and his friends would run back in the day. He created ships, battleships, aircraft carriers, he drew them, he knows their displacement tonnage when they are fully laden with planes. he created tracking systems, missiles, YOU NAME IT.. from online resources and the old Janes books on military stuff, such as ships, tanks, armored carriers... This is stuff people could find and know and understand if they read those types of books. Yet all that effort for a dice and paper game. Oh and lets not forget their "theme" music.... And now.. one of the latest.... ships in space.. Yes, Space ships.. probably NOT the type you would see in real life ( in our life times), but ones you might see in a movie, like Alien, or Serenity. The "lower" tech type vs the Star trek type (Yes he has made those too).. but we are talking hull armor thickness, propulsion systems, maneuvering capability, crew size, crew quarters.... He has done this in the past, but we are in a revamp of the old game, so he is creating NEW ships.... One was 3 levels high, he created it, and then had me go to a printer to get clear copies on plastic so we could use an overhead projector I got cheap for the game... He goes a bit overboard on his normal characters too, ALL his (our) friends do... The "stargate" type game in our world is based from the UN.. so you guessed it... Our friends went onto ebay and other places and got UN berets, and flags. They "dress" up for our games, as we sit around a table in the basement with our laptops, saving worlds from even shapeshifting aliens, or like creatures/people. For christmas this year, a good and dear friend gave us all pins or patches based off of what OUR characters do in the Space game.. So I have a set of wings, from a Nasa medical officer, he got off of Ebay... I know my DH does this to relax, and he loves to create these things.. I just wish he could get money or find a job where he could do that all the time. We drove down to Chicago last night from WI, he was on his laptop creating a big battle cruiser for the space game... I love him, but sometimes the amount of work he puts in to the stuff. is just ODD. Oh, and we can't walk through a Home Depot like place with out him commenting on how well that item would work on one of his many ships, be it space/blimp or sea going... But then I can look at a dog, cat, or horse and name its breed, if a horse I can go back or will go online and look up its bloodlines.. and can recite that back to the days its ancestors were running on the plains of africa or steppes... So what weird things does your family do??