Matching Pairs How to make an Ecobrick??Online version Match the steps! by Erica García 1 Collect non-recyclables materials to fill it. Make sure all materials are clean and dry. 2 Once the bottle is full, put it to the test. Try to squash the bottle with your foot. If t dents in, it's not ready. Keep filling and compressing. 3 Well done! Put the lid on and your eco brick is finished and ready for building. 4 Use a stick or the back of a long wooden spoon to compress the waste down. 5 Find a clean, dry, plastic bottle. 500 ml to 2 l bottles are ideal. 6 Take large items and cut them into smaller ones so they can fit into the bottle.