Here is a big old site with tons of ships all to scale to each other.
Highlights include the usual ships, plus:
- Under the Bug Hunt on Outpost Nine section:
SHIP NAME/TYPE: Warrior Bug
LENGTH: 4m (Body)
BUILDER/COMMENTS: Volkswagen Hive
SOURCE: 1970
- GOO!
SHIP NAME/TYPE: Generic Humanoid Carbon Units
HEIGHT: Anywhere from around 1.5m to 2.0m.
BUILDER/COMMENTS: Monkeys? God? The God of Monkeys?
SOURCE: Warm Liquid Protein Goo
- Wookies!
SHIP NAME/TYPE: Chewbacca
HEIGHT: Big
BUILDER/COMMENTS: Hairy
SOURCE: Star Wars, Episode IV
And, for scale:
Stay Puft
Marshmallow Man
Height: 43m