Tropicana
It appears that the sale of various Tropicana items (furniture, etc.) has been completed, per the Auction Company's website. See here for their pics & more.
https://www.iclsales.com/sale-listing/tropicana-las-vegas-2/

(I didn't attend it. Admission price was $20 or $25, and was completed before I arrived in LV this week for the chip show. It was sad, driving by the Trop with demolition half done. The Oakland A's -- soon to be Las Vegas A's? -- will have a great site for baseball!)

Mirage
I also heard on the LV radio that Mirage will be doing a similar auction and sale sometime after it closes in July. Details vague, but here's some info:
https://www.reviewjournal.com/business/casinos-gaming/own-a-piece-of-the-mirage-las-vegas-resort-prepares-to-sell-furnishings-3069148/#

( I always liked the Mirage and how Steve Wynn's vision changed the Strip. I did stop in this week to see it one last time before closing.)

Great seeing everyone at the chip show!