I know vehicles were already denied but... i wanted to try something different :
Basically a controlable flying vehicle used mainly for transportation. [And a high speed alternative to jetpacks]
It could have internal inventory (opened by shift right click) which has size of a double chest.
You must use filled Fuel cans to refill its tank.
Helicopter accepts overclocker upgrades, increasing flying speed and fuel usage.
It gets damaged if collide with terrain or entities (mobs/players) based on speed.
Damage can be repaired with wrench + Carbon plate/Advanced alloy/iridium plate/, depending which base material was used.
Carbon plate helicopters have medium damage resist and very high speed.
Advanced alloy helicopters have high damage resist and medium speed.
Iridium helicopters have very high damage resist and high speed.
There could also be an electric version made of Aluminium plates (you get it with uum) that has high speed but very low damage resist.
Its internal storage size is a single chest. Has one slot to place a lapotron crystal which gets drained to power the electric helicopter.