Of the portable evaporative coolers I have tried, this VAGKRI one works best: https://geni.us/z9zA5Kc (Amazon affiliate link)
Here are some other evaporative coolers that will work well based on their design and pad size (affiliate links):
Hessaire MC37M - https://geni.us/oC0ysN (Amazon)
Hessaire MC61V - https://geni.us/xHqjX (Amazon)
Mountman 3531 CFM - https://geni.us/1OTgmP (Amazon)
ALPACA 2200CFM - https://geni.us/OntbLd (Amazon)

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