I like this a lot - nice work! It took me a little thinking to get what the microphone was - may not need that. Might also drop the "speaker" in the title. Any way to punch up the word or idea of fun? Again, nice work! Thanks!
For #20, Also, maybe toy with the font of my name a little. I'm torn between serif and sans serif fonts as well as the all caps vs regular. As mentioned above, I like the home plate graphic.
I see where you're going with #67, but not quite right - probably needs a little explaining if someone isn't thinking baseball when they see the briefcase. I still like #42 & #44 or some other font with the graphic!