Frown screen - answered
Hovi tip black - semi gloss is fine, same as the Vcoder.
Vocoder with gloss black - You can always use gloss then take a fine scotch brite pad and scuff it up dulling the shine. Or buy the correct color online
Sanding ABS - I personally where a respirator though good luck finding one these days. Any dust mask with a N95 rating will work also, but again good luck finding any. Next option a hankerchief or rag. Something is better than nothing.
Hope these help