balloons - too close to "drug-reference"

glasses - probably the most "under-photographed" content out there , but
there are some guys that look hot with lenses! , the appeal is "schoolboy" , "office-nerd" , the guy next door (the real one!)

jockstraps - about as masculine as "sexywear" get's and great for covering little dicks and/or erection problems. the appeal "gymbunny" , "lockeroom-sex"

wrestling - my personal favorite! , this is a great way of getting close to a straight-guy without it appearing like sex. the appeal "putting your hands on something you might not otherwise get a chance to do in any other situation!"... i'm guessing

sincerely ~ ..."my niche is not mentioned here" ...