I have a few suggestions
Title: Jet ski
Format: vehicle
Short description: a water based vehicle that goes fast with and turns sharp.
Full description: everyone knows what a jet ski looks like and how it
functions. Parts on the jet ski that would move reletive to the body of the jet ski can include; small propellor or jet animation in back, right handle spins slightly as one speeds up like the motion used to rev its motor, and the entire handle bar when turning.
Title:Bike
format: ITEM
short description: this is a bike that instead of being a vehicle is an item. This may remind you of the key item bike from the pokemon series.
long description: it is like a regular item, goes in an item slot, when you press the jet button, you don't jet nor do
you exit from the bike but changes speed from fast to slow. When the bike is pulled out, its color reflects that of the current color of a player's spray can (like the skis). Wheels spin in with ground, handle bar rotates, fire key causes bell (optional). I mainly need this as a way for players to recieve a bike and yet have an infinite amount of them, this is for a large pokemon sinnoh map I'm making.
Title: Wakeboard and wakeboard boat
format: wakeboard (item), boat (vehicle)
short description (wakeboard): a board item similar to the skis but you can go on water.
Short description (boat): a boat, nothing special, EXCEPT!!!
Full description (wakeboard): this will be a bit more complex than a normal item. When it is downloaded, a tab under controls is added so that one can parent certain keyboard keys to different tricks that can be performed while using the board item.
Full description (boat):EXCEPT!, another mount point way behind the boat with a thin line running to the mount from the boat to serve as a wake boarder mount point, if you can figure out how to make the mount movable and thus the person there can move. Wave animations behind the boat that change height and width when speeding up and slowing down and these waves could then be riden on by... Say a person with a wakeboard item on and sitting on the mount. This boat could also be coupled with the parachute and make a parasailing boat.
Title: mount
format: vehicle
short description: an invisible, single mount vehicle that can't be moved nor drivin.
Full description: see above. Used for anyone trying to make a realistic airplane build and want seats that people can actually sit in without having to use the sit animation thing. That's the only reason I thought of.
Title: canoe/kayak
format: vehicle
short: a canoe(s) with one/two/three/four seats. A single seat kayak.
Full: a canoe pack with four different canoes, 1 seater- 4 seater. The animations for the one seater canoe would include a single paddle that, when forward key is pressed, pushes back on the left then right then left, like an actual paddle motion. When one presses the right key, the paddle only pushes on the left side. Vice versa for other side. If the canoe is a two seater-4 seater, the back most mount point would steer while the other mount(s) would supply power. The 2-4 seaters would only work with no less than 2 people and the order for entering would be mount 1 (front) mount four (back) mount 2 (second to front) mount 3 (third to front). If this was a kayak then there would be one, double bladed paddle that uses one blade on one side of the vehicle and the other valse on the other side. Again with repetetive motion of the paddle on the opposite side that the vehicle is turning towards.
Title: bowling ball, tennis ball with racket, golf ball with club, basketball, fencing swords, Frisby.
Format: items
short: a montage of sports equipement.
Full: bowling ball has under arm throw and when the ball hits the ground, it continues to roll. Tennis is a ball (one item) and a racket (another item). Animation for ball includes straight up through for serving, and it stays around until a command says for it to DIE like (ontennisballenterzone--tennis ball--irradicate!!). Racket's animations would be simple, just like the Lego starwars lightsaber animations, and when the ball is hit at a stand still position, it's rebound is significantly higher than that of the nomal hit. Samething with golf except the ball's animation would be a simple drop, and it would have the same irradication eventing. Basketball again same thing, except, when it is thrown, it can be picked up be anyone who touches it. The swords are a simple concept, a skinny sword that when it hits another player, causes the hit player to be pushed back, uses click push type thing. The frisby is a disk that, when thrown, spins and follows a parabolic path. When it hits the ground it disappears.
Sorry if this is a lot of stuff, it's only a sliver of my list O' stuff I'll never be able to make but want made. I hope you'll make something from this list or at least get some inspiration for another project.