The equipment required for day trip is generally quite simple. The first two items are not expensive. Light nylon day packs can be purchased for a few dollars, while any rugged plastic container that can be tightly capped should serve as a water bottle. For most trips, it is also desirable to bring along a rain suit or extra sweater, depending on expected weather. There are many other optional items, such as hat, sunglasses, sunblock, bug repellent, camera, etc.
Specific activities dictate their own requirements.
Because of the great variety of requirements for different activities, we will not attempt to provide a list of equipment. The Cabin Page has suggestions for equipment that should be taken on Cabin trips, and the Canoeing Page describe what is required for canoeing. If you are uncertain as to what equipment is required, be sure to consult with the trip leader. Please remember that on most trips minimizing the weight and volume of personal gear is highly desirable. You probably own much of the personal equipment required for UTOC trips.