I have a small-ish resin printer that I use to create tiny detailed parts (like the wee logo badge on the 1:6 scale Model III: https://store.transmutable.com/l/e-trs-80-model-iii) but it's still way too big for my work. I'm really tempted by the Lite3DP Gen 2 which has a print volume of just 36 x 48 x 80 mm. It is OSHW, runs on an ESP32, and seems pretty hackable.
https://www.crowdsupply.com/lite3dp/lite3dp-gen-2