A beautiful DIY with plastic bottles. Tip: Use a medium hot iron and place it on the mouth of the bottle to connect the finish! Use baking paper between the Iron and the bottle, so you don't ruin the iron!
Upcycle plastic containers (spray / detergent bottles) into baskets, gift bags, containers, etc. Maybe larger square gallon jugs for holding craft supplies or keeping small things together in the closet, or.