Empty sunscreen bottles are one of those things I hate tossing when the plastic still feels sturdy, and this little garden project is one of my favorite ways to give them a second life. By melting chopped sunscreen bottles together with wire coat hangers, you can make tough, shatter-resistant garden stakes that hold up beautifully for marking rows, supporting light plants, or keeping little pathways tidy in the garden.
I like this project because it uses just two main materials, it’s budget-friendly, and it’s practical in a way that really pays off once planting season gets busy. If you’re comfortable working carefully with heat and want a simple upcycling project that makes your garden more organized, this is a very satisfying one.
Materials
8 empty plastic sunscreen bottles, washed, dried, and cut into 1/2-inch pieces
Instructions
1. Wash the empty sunscreen bottles thoroughly, remove as much residue as possible, and let them dry completely so the melted plastic stays as clean and even as possible.
2. Cut the bottles into roughly 1/2-inch pieces with heavy shears, trimming away caps, pumps, labels, and any non-plastic parts so you are left only with the bottle plastic.
3. Straighten the wire coat hangers with pliers and cut them into 12- to 14-inch lengths, making one wire core for each finished garden stake.
4. Lightly oil the loaf pan or line it with parchment paper, then spread a 1/2-inch layer of chopped plastic pieces across the bottom.
5. Lay the wire lengths into the pan lengthwise, spacing them evenly, and cover them with more chopped plastic until the pan has a packed layer about 1 to 1 1/2 inches deep.
6. Heat the pan in the oven at 325°F for 15 to 25 minutes, checking often, until the plastic softens and fuses into one solid mass around the wire without smoking.
7. Wearing gloves, remove the pan and press the softened plastic down firmly with a metal spatula or bench scraper to compact it and remove air gaps.
8. Let the plastic cool for 5 to 10 minutes, then lift out the slab and cut or press it into long stake shapes while it is still warm and workable.
9. Taper one end of each stake by trimming or pressing it into a point, and smooth any rough edges with the scraper while the plastic is still slightly soft.
10. Dip the shaped stakes briefly into cool water to set their shape, then let them dry fully before using them in the garden.
11. Push the finished stakes into garden beds beside seedlings, along row edges, or near lightweight plants that need a little guidance and support.
Variations & Tips
For easy color sorting: Group similar bottle colors together before chopping and melting. I like doing this when I want different stake colors for herbs, tomatoes, or flower beds.
For plant labels: Leave the top 2 inches of a stake slightly wider and flatter so you can write on it later with a paint marker or grease pencil.
For stronger support: Use two wire lengths inside each wider stake if you want to support heavier stems or mark deeper rows in a vegetable garden.
Keep the heat gentle: If the plastic starts to smoke or darken too quickly, lower the oven temperature right away. Slow melting gives a cleaner, sturdier result.
Use dedicated tools: I always keep the loaf pan and scraper for workshop use only after a project like this. It’s a simple precaution that helps keep kitchen tools food-safe for family meals.
Make kid-friendly garden markers: If you’re using these mostly as row markers, shape shorter 6- to 8-inch stakes that are easier to tuck into raised beds and little container gardens.