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Beginner8h1–2
WagmiViemNext.js
16/20First Wallet Testnet Sandbox
Learn to use a wallet safely with fake money and guided missions.
Beginner10h1–2 people17/20 fit
Build First Wallet Testnet Sandbox for complete crypto beginners in ~10h with 1–2 people. Stack: Wagmi + Next.js + Testnet.
Why it wins: Onboarding education judges value.
Build flow
01 · Problem
Beginners make costly mistakes on their first real transactions.
02 · Solution
Missions guide users through receiving test tokens, sending, checking addresses and spotting a fake site, with explanations at each step.
03 · Build
- 1Design missions
- 2Connect testnet wallet
- 3Verify actions
- 4Award badges
04 · Demo
Complete the 'spot the scam site' mission.
MVP checklist
- Guided missions
- Test tokens
- Scam spotting
- Badges
Tech stack
| Tech | Role | |
|---|---|---|
| Wagmi | React wallet hooks | Chain |
| Next.js | Frontend + API routes | Web |
| Testnet | Tooling | Tool |
Reference repos
Open-source projects you can build on. Links checked 2026-10-31.
Related ideas
More Web3Find and revoke old unlimited token approvals
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