Media Room Cooling Options

Any suggestions on how I could better cool my media room? It’s a small closet spaced room that has a vent from under the house and a ceiling vent (like you’d have in a bathroom). I have sealed off the door so that when the ceiling vent runs, it draws air from under the house as that’s cooler. This tends to work until it’s really hot outside, which then gets my room to about 92F. I’m looking into some very small portable AC units, but would need to vent the air up through the ceiling vent so I’d need the right hose and adapter. Thankfully the BTU of the unit can be quite small since the space is small and the reasonable temperature of this equipment is higher than what I’d consider comfortable to live in myself. Also any considerations for water condensation removal?

Anyone have a setup that they love? Hopefully this isn’t too off topic since it’s more about the meta of their self-hosted physical environment.