I designed a quick board for use with the lilygo t-display board that im currently prototyping with, looks good so far and really only has 3 thermistor inputs, the SSR output and some breakouts for other pins that might be useful in the future. The board itself is a simple 2-layer board.

Kicad's 3d Renders:

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And, i've already sent this version off to oshpark for printing, this first version is quite simple: