You are looking for a small aqua lock 'n lock container.
The Geocaching Notification form has been submitted to Nathan Fries, Ranger, Lake Wissota State Park. Geocaches placed on Wisconsin Department of Natural Resource managed lands require permission by means of a notification form. Please print out a paper copy of the notification form, fill in all required information, then submit it to the land manager. The DNR Notification form and land manager information can be obtained at: http://dnr.wi.gov/files/PDF/forms/2500/2500-118.pdf”