Water: there is no running water at the yurt. Water is one of the amenities that you don't realize how much you use until there is no faucet to turn on! Bring 2-5 gallons per person, per night depending on how much cooking you will be doing. Dishes take 3-4 gallons of water. I usually fill the large pot with river water and heat it up to do dishes- saving the potable water for drinking and cooking. If you bring your own containers to fill with water there is a mountain spring on ME-26 on the way to the yurt from Portland.
Toilet paper: self explanatory. Used toilet paper can be composted in the outhouse - please use sparingly.
Ice + cooler: This is less of an issue in the winter than the summer and there are plans to install an indoor-rated propane refridgerator/freezer in 2021. Until then you keep food and beverages cold the old fashioned way: the ice box! There is a hard plastic Coleman cooler at the yurt but you may want to transport ice, freezer packs, and cold food in your own cooler.
Food: There is a complete kitchen setup at the yurt but you will want to pack less than 5-course meals. We like making Mason Jar meals that require water, meat, and maybe a can of tomatoes. Throw it all in the pot and relax until it's done.
Headlamp/flashlight + batteries: There is a battery powered lantern at the yurt but you'll need something for getting from your car to the door.
Cell phone / device chargers: There is no power at the yurt so if you want to keep your phone charged bring a couple batteries & associated cords / adapters. Most guests find the cell reception at the yurt enough for calls, texts, and Internet access.
Bug spray: The yurt is located in wetland / shoreland zone and can get buggy. Depending on your tolerance for bugs bring spray but try to apply away from the yurt- some of the chemicals in sprays can eat away at the canvas exterior and poly-liner interior.