A set of 3D printing designs for sci-fi landing pads in 28mm-40mm wargames scale (although some of the 'pure' pads would be adaptable to other scales) by Kathy Millatt.
Kickstarter: https://www.kickstarter.com/projects/kathymillatt/modular-sci-fi-landing-pads?ref=ct9sfb
Video:
Some interesting stuff there. I saw her Traveller Type S scout build on Youtube and sooooo wanted it as a long time fan.