How realistic do you want it to be? Making a simple teepee is fairly easy. You need 5-6 tall sturdy tree branches or pieces of lumber. Youll need help standing them up. You stand them up in the circle and lean them against each other for support. You can tie some material or rope around the top to keep it more sturdy as well. Next all you need is some type of material (real teepees used animal hides) to drape around your teepee to provide shelter.