A golf aid having a horizontally elongated body with a top surface, bottom surface, front surface, back surface and two opposing end surfaces. The membrane comprises a polyarylethernitrile sulfone having structural units of formula IwhereinR1 and R2 are independently H, nitro, a C1-C12 aliphatic radical, a C3-C12 aromatic radical, or a combination thereof;a is 0, 1, 2 or 3;b is 0, 1, 2, 3 or 4; andm and n are independently 0 or 1. First and second doped optical fibers are respectively disposed in the first and second optical transmission paths. The first retainer and the second retainer are configured for attraction by a magnetic force so that the secondary tool is retained in connection with the primary tool. The free end portion is at least partially bounded by at least one \u201cas laser cut\u201d peripheral side extending adjacent the firing tip. The food holding receptacle may also be used to stably support a beverage container following inversion of the receptacle.