@vaurora @phpledge That about a mask decorating table makes me think of a news item I read in 2020... let me find it (yes, my brain works in mysterious ways, so I read mask-decorating and think music-enhancing).
https://www.reuters.com/article/health-coronavirus-hungary-concert-masks-idINKBN2652QA
If a mask can both help protecting from COVID *and* help listening to music better, surely there could be something similar for an in-person conference... hear the speaker better! protect people!