CLEAN PACKAGING, NEW PURPOSE
Make Interlocking Cardboard Desk Dividers
A shallow cardboard tray can become a useful organizer for light desk supplies with two slotted divider strips. Measure the actual inside of your tray, then fit the strips loosely enough to remove. Start with one crossing rather than a complicated grid. This project is for dry indoor storage of lightweight items, not structural support or electrical equipment.
Start with your materials ↓
WHAT TO GATHER
Your starting kit.
- Clean dry shallow cardboard tray
- Two strips of clean corrugated cardboard
- Ruler, pencil, and sturdy scissors
STEP 01
Measure the inside
Measure the tray length, width, and depth. Subtract a little from each horizontal measurement so the strips can slide into place without bending the walls. Choose a divider height below the tray rim and mark both strips to that height.
STEP 02
Cut the strips to fit
Cut one strip for the length and one for the width. Use sturdy scissors only if they handle the cardboard comfortably; choose thinner card if they do not. Remove staples or tape from reused packaging before beginning.
STEP 03
Mark opposite half-depth slots
Find the midpoint of each strip. On one strip, mark a slot from the top edge down to half its height. On the other, mark a slot from the bottom edge up to half its height. Make the slot width approximately the thickness of the other strip.
STEP 04
Join and adjust gradually
Cut the slots carefully and slide the strips together to make a cross. If they resist, widen the slots a little at a time. Set the cross inside the tray and check that it rests flat without forcing the tray walls outward.
STEP 05
Sort light dry supplies
Place pencils, erasers, or paper clips into the compartments. Keep the tray away from water, heat sources, and powered devices that need ventilation. Replace soft, crushed, or damp cardboard instead of trying to load it more heavily.
Before you begin.
Does it need glue?
Not necessarily. A comfortable friction fit inside the tray is enough for light supplies and is easier to adjust.
Can I store tools in it?
Keep it to light desk supplies. Heavy or sharp tools need a purpose-made organizer.
Original editorial project guidance. Images are AI-generated concepts, not photographs of tested finished projects. Practice on inexpensive materials and follow tool and material instructions. Sources & approach.
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