Since the discussion has migrated a bit... we are carry on only types and definitely focus on 'tech' fabrics... Think stuff from Columbia brand... it can be washed in the sink and dries quickly. We carry a bungy cord with clips from drying. We carry detergent sheets in a baggy. I don't want to spend time in a laundromat - I do the laundry before bed (takes 5 minutes) - and it's dry in the morning.
Another baggage saver is limit your number of shoes. Shoes are bulky. Wear your bulkiest shoes (often hiking boots), have 1, or at most 2, pairs of shoes in your carryon. Shoes (and all your clothes) need to work with many outfits/combos. If you can limit your shoes to 2 pairs you're golden in doing carry on.
Our longer trip next fall we are doing 1 checked bag, shared between the two of us... That's because I want to bring three Italian language books (dictionary, verbs, and percorso (which is specific to the citizenship language exam)). They are not cheap books or I'd just by copies there. It will also allow us to pack warm jackets since there is a big delta in temp between September transatlantic cruise and December in Florence. I can't just mail the books ahead like I would to a hotel, since we are staying in an airbnb.