The invention includes an ear or nose plug and a method of forming such an ear or nose plugs. The method may include providing silicone rubber base and catalyst materials and mixing about equal parts of the silicone rubber base and catalyst materials to form a homogeneous putty. The method may further include forming a bullet shaped and sized module of the homogeneous putty. The method may further include inserting the module within an ear or nose cavity using enough gentle pressure to allow the module to conform to the ear or nose cavity and leaving enough of the module outside of the cavity to grasp for removal. The method may further include waiting a predetermined amount of time to cure and removing a custom shaped ear or nose plug. Embodiments of an ear or nose plug formed by the above method are also disclosed. The ear or nose plugs are formed in situ and quickly cure according to the methods of the present invention.