Recommendations on how to keep the temp down in an end-table humidor?

Hello everyone!

I recently purchased a end-table humidor - fantastic quality...and can't wait to get it.

Just curious though - anyone have any ideas or recommendations on how to keep an average 70 degree temp in there? I keep my house around 76 and my current 150 count humidor stays at 78 degrees and I occasionally stick it in my deep freeze in the garage for an hour or so to lower the temps for a few days.

I see whole fridge type scenarios (wine fridges, etc...) but it's a little late for that? Does Ice Gel or what not work in a somewhat larger humidor like this? I would guess the issue here is that that they just aren't going to last long enough to make it worthwhile? Are there any automatic temp units that are similar to the auto humidity units?