Add user submited keywords/tags for items.
Sort of like how like Drsloth.com handles images. Sometimes the general "theme" of an item is not always represented in it's name. They could be searched with a filter like "tag:water" or "keyword:neovian". Of course, it would take time and user submittion to actually work well.
Hmm. I’m interested in the idea of per-user tagging implemented with the existing lists feature. Community-wide tags would definitely be more helpful, but would also involve significantly more moderation, and I always try to avoid features with moderation because there’s both a large setup cost and a large recurring cost. But I’ll keep this in mind :)
I came here to suggest this idea. I'm so tired of sifting through literally hundreds of items trying to remember which are Christmas, Winter, or whatever holiday related. If I could tag them myself, then next year I could use the filter tag:halloween (or something similar) and all my tagged items would come up.