Vehicles
D00Med

A mod that adds an api for cars, planes, and other vehicles.

Edit Skin
Johannes Fritz

Advanced player skin customization

3D Armor Flyswim
sirrobzeroone

Adds Flying and Swimming animations to base character model for 3d_armor

Automobiles Pack
APercy

Collection of automobiles

Emote
sofar

Provides player emotes and an api to make the player model sit, lie down and perform other actions.

Spectator Mode
jp

A mod for Minetest allowing you to watch other players in their 3rd person view.

Discrete Player API
Hume2

A library for games which attaches players to node grid

Skinmaker
GreenXenith

In-game live player skin editor.