Send him photos of anything that looks like a Rubber Duck.
Mark Destino sent him this one of what looks like a Rubber Duck made out of GMO golden rice perched atop a lovely stew. Joey gets dozens of these a day and it drives him up a wall. Every once in a while he sends one on to me to show me how I have denigrated the original mascot of GMG, Homie the Seagull, with these monstrously annoying Rubber Ducks.
The only other thing that drives him up a wall even faster is if people send him Rubber Ducks. Going to Amazon there are plenty of links for multiple Rubber Ducks which you can then send to the dock:
c/o Joey Loves Rubber Ducks
95 E Main St
Gloucester, MA 01930
Meanwhile negotiations for a Gloucester visit of the 56 foot Rubber Duck which is currently in Hong Kong are stalled. Please contact Dutch artist Florentijn Hofman and plead with him that the Rubber Duck needs to stop in Gloucester, MA.