Cheap, powerful, compact, metal and sturdy.
Here was my shopping list:
Grommets for cable holes (these could have been thinner; 3mm was a bit too thick)- https://www.amazon.com/dp/B07841YZM5?ref=ppx_pop_mob_ap_share
Hole saw drill bit - https://www.amazon.com/dp/B07DQBD7GH/ref=cm_sw_r_cp_apa_glt_fabc_N7E8R3SVVAVN476HA38S?_encoding=UTF8&psc=1
Magnetic spice racks - https://www.amazon.com/dp/B07WZG66D1?ref=ppx_pop_mob_ap_share
Fans - https://www.amazon.com/dp/B004WT6Z54?ref=ppx_pop_mob_ap_share
Extension cable for light below shelf - https://www.amazon.com/dp/B08J9T4CS4?ref=ppx_pop_mob_ap_share
Foam insulation, but I ended up removing this from the doors as it became too humid (like 97% humidity) - https://www.amazon.com/dp/B086YH7B4T?ref=ppx_pop_mob_ap_share