Traveling often requires packing small portions of liquids or creams. Detergent caps can serve as handy containers for such needs. Before your trip, clean the caps thoroughly and use them to hold small amounts of lotion, shampoo, or conditioner. Secure the contents with plastic wrap and a rubber band or seal with a piece of aluminum foil before placing the cap in your luggage.
This approach not only saves space but also reduces the need for buying travel-sized toiletries, which often come in their own plastic packaging.
7. Build DIY Learning Games and Sorting Toys

Detergent caps can be used to create educational games and sorting toys for children. By writing numbers, letters, or shapes on the caps, you can develop activities that help young children learn and practice their skills.