I am quite impressed that the ancient Amazon.com link [0] on the page (with quite a few non-trivial query params) still returns relevant results today. A good case of Cool URIs don't change [1].
It's worth mentioning the recent development of extremely miniaturized (soda can-sized) refrigeration compressors, such as those from Aspen Systems [1]; these allow for efficient cooling in small spaces that just can't be achieved with Peltier-based solutions.
An interesting project I've seen using one of them is this portable chiller suit to cool the human body on-the-go, intended for relief of Multiple Sclerosis symptoms [2].
For DIY/prototyping, there are a bunch of Chinese manufacturers now producing compressors of these sizes along with the appropriate driver board for the variable-speed AC motor [3]. I'm excited to see how this technology will be applied elsewhere in time.
His main website is really fantastic, well worth a visit: https://www.fourmilab.ch/