D&D5e Downtime

Player's Handbook

p187

• Crafting: Creating items and goods.
• Practicing a Profession: Working for another, for which you are paid.
• Recuperating: Recovering from poison, illnesses, or lingering injuries.
• Training: Learning new Skills (500 days), Tool Proficiencies (250 days), or Languages (250•125•80 days)

Dungeon Master's Guide

• Building a Stronghold: Constructing a building (must own land)
• Carousing: Partying and gambling.
• Crafting a Magic Item: Creating an item of magic (must have schema)
• Gaining Renown: Working for your Faction to gain Rank.
• Performing Sacred Rites: Performing and observing religious rites to gain Hero Points.
• Selling Magic Items: Finding a buyer for a magic item.
• Sowing Rumors: Creating new rumors and spreading them around town.

House Rules

• Information Network: Establishing and then using an information network of some kind.
• Research: Researching Lore (knowledge and information), Formulae (spells), and Schema ("recipes" for making magic items).
• Running a Business: Running a business that might result in profits or could cost you.