This year I grew cucumbers on my balcony for the first time, and they were surprisingly low-effort. You do need to pollinate them, if you're too high for bees, or other insects. That aside I just watered them twice a day, except on days I forgot, and hoped for the best.
Tomatoes are a bit hit and miss for me, hence trying something new this year. Usually I just grow strawberries and tomatoes at home. Other stuff gets grown on a 10m x 10mx patch of land nearby.
I recall cucumbers are also prone to diseases but perhaps not as sensitive as tomatoes. One thing, if you don't water them diligently, they will grow bitter. Like quinine-level bitterness, enjoy eating them like that! :)
Tomatoes are a bit hit and miss for me, hence trying something new this year. Usually I just grow strawberries and tomatoes at home. Other stuff gets grown on a 10m x 10mx patch of land nearby.