Okay there's this;
You are chafing at the bit to do something different. Paper/Card, isn't on the list. Neither is the more costly resin kits. What to do? Question, Does the Civil war interest you? So here's an idea. There was a boat. Well, a series of them that existed around that time that were considered way to far out for the saner fighting men in the C.S.A to deal with.
Enter the " Davids". What were they? How about this description. To quote the Authors Brian Hicks and Schuyler Kropf from the "Raising the Hunley" Book. From Page 42. "They were cigar shaped, made of wood covered with sheet Iron. Their bows came to a point where a long Iron spar was attached for where the torpedo warhead was attached.They resembled an overturned boat with a smoke stack sticking out of it. Unlike the submarine they had the luxury of Steam Power.
Now like the "Hunley" this would be a very easy project. You go to H.L and buy a plastic tube( Clear ) of animals. They have them hanging around. They also contain Little Green Men( Soldiers) Cowboys and Indians etc. There's the hull! Got to the model rockets and buy two nose cones. There's the ends. Now use your imagination and greeblies for the rest. A two bladed, very crude prop, and single rudder under the centerline. No conning tower. just a pair of fairwaters alongside the hatch on the top. Clear tube. You can do the interior, (One level) slide it in from one end and finish her up. Then you'll have nothing else no one has. A " David", By the Way, They did sink and damage Union ships BEFORE the Hunley.
Or take and pinch your tube to shape it under hot water then cut out one side and build the " Hunley" There's enough photos and drawings available to do the job. Go ahead, Challenge yourself. You'll have on display something few have. PLUS, you will have somethinbg that costs way less than a Resin example. Without the stink of resin sanding!