I wouldn't call this ‘small things’. This is ‘big things’! I love you for writing this Amy! Having worms like this helps young children not be afraid of creepy crawlies anymore I find (like I was fearful of for a long part of my life).
That's connecting to nature big time.
A few tips for people with only balconies: you can also go the way of bokashi making https://www.biome.com.au/blog/bokashi-composting-faq/
Or you can go the way of terra preta (with biochar). Both are ways of fermenting organic waste in anaerobe conditions (without oxygen). A recipe for terra preta making you can find from my friend Ayumi Matsuzaka in Berlin. https://www.ayumi-matsuzaka.com/sites/default/files/all-my-cycle-5-499.pdf
And if you wonder about the biochar. Sylvia Sandri, near Rome in Italy is doing great stuff making local biochar and helping people compost. The combination of energy and biochar is the future…
Happy connecting to creepy crawlies!