4. 2. Ever thought of converting your old dumpster into a pool? Get inspired with this DIY by up cycling your old dumpster into an amazing and refreshing swimming pool. You’ll get the perfect pool size without having to do much, and guess what? It’s already been waterproofed for your convenience. All you’ll need is some wood and another waterproof fabric, and you’re good to go. Check out the step-by-step instructions at the bottom of this article.