Five tools that pay for themselves in the first week. Not hype-cycle products — the ones founders keep installed across multiple companies.

1. Cal.com or Calendly. Ends the "can we find a time?" email thread. Put the booking link in your email signature; save 2-3 hours per week indefinitely.
2. Notion. Wiki, docs, project management, lightweight CRM. Pick one surface for team knowledge; Notion is the strongest generalist.
3. Loom. Short screen recordings replace long emails for anything with visual component. 2-minute video = 10-minute written explanation, and recipient understands more.
4. Zapier (or Make). Connects tools that don't integrate natively. Five automations replace 5+ hours of manual work per month.
5. A good password manager (1Password, Bitwarden). Autofill saves minutes per day; shared vaults let team members access credentials safely. Security payoff on top.

Five tools, under $100/month combined for a small team. Add from the broader productivity universe as specific frictions emerge — not proactively.