You are looking for a cammoed plastic container.
DuPage County Forest Preserve District: PERMIT #314
1. This cache is placed on the DuPage County Forest Preserve property with permission.
2. Do not place food, inappropriate, offensive or hazardous materials in container.
3. DuPage County Forest Preserve hours are 1 hour after sunrise until 1 hour after sunset.
4. It is your responsibility to be aware of the rules and regulations (see information kiosk)
5. All Forest Preserve rules and regulations apply.