Just wanna share some tools for Unity created by me (hope this is allowed), and which I use in almost each game jam (where pre-made assets are allowed). They can speed-up development process, as they contains some ready for use common components & scripts.
All assets contains readme in their repo.
|Asset (+ link)
|Unity Template Project
|Rich set of common components to start you new project. Contains both pre-made basic folder structure (for scripts, prefabs, materials etc and game components like movement, health, UI, game management
|Scripts extensions in categories: coroutines, collections, math, components, etc
All assets are being getting better from time to time.