Maybe something closer to earth. Like a space agency contest or contests!

- Multistage rocket with payload (satelite)
- Apollo 11 Mission ( Multi stage rocket + lander)
- reusealbe space transporter (space shuttle)
etc....

I think its nothing for a contest, but I guess if someone is bored and want to test his engineering skills, built a ... wait for it....

"working 5 x 5 small grid Rubiks Cube"

Some more mod suggestions:

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=412986157

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=416810412

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=663633357

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=388580965

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=298550266

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=294621451

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=294619787

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=294620323

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=566142426

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=785804182

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=421640222

Industrial:

Hydrogen Refinerie (planet based)
Ship/Vehicle Factory (planet based)
Mining Complex (planet based)
Mining and Ore proccessing Ship (LG)
Repair Ship (LG)
Shipyard (LG)
Hydrogen Refinerie (Space Station)
Tunnel Drill

Civilian:

Cargo Hauler (LG)
Orbit to ground Shuttle (SG)
Luxury Liner (Cruise Ship alla Fifth Element)
Trader's Hub (LG Station)
Truck Stop (LG Station, a small Truckstop in space or on an astroid)
Museum (dedicated to the modders)
Roll on Roll off Hook truck (sg planet)
Space Port (planets)
Space Elevator
Mono Rail
Bus Depo
Logistic Centre
Warehouse
A nice Dam
Research Facility

Military:

A drob ship (vtol optional)
Corvet/Scout (LG)
Minelayer (LG)
Frigate ( build like a modern naval frigate, Recon drone + helo, guided Rockets etc)
Carrier (LG something big 15k+ blocks)
Military Tanker (LG fleet utility ship)

Hover Tank (SG, planets)
Outpost (LG, planets)
Cargo Truck (SG)
Ground Attack Plane (sg)
Mech (sg)
Bomber (like a B2)
Fighter + Air Tanker (SG)
UAV (sg)
A TDM Map (LG)
Grav Cannon (space)

My standard mod-setup.

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=490036307

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=300571927

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=304787878

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=482595829

Distributor: Street
Creation's Name: TigerShark
Short Description: Follows ( Iam a bit bussy)

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=713791477

Distributor: Street
Creation's name: Octo Scorpion
Short Description: Mix of an octopus and a scorpion. 75 k gold ingots allready loaded. To get it out of the hangar, fly it back and aline the front fins with the middle of the gate. Nose down and bring her out. Aim for the middle of the blockade (empty space). Engage the "mass drive" (control + 1 then number 3). Launch the sting (control + 1 then number 6) in the first seconds of contact. Just keep going.

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=652523203