I love the term "splashy casual" too!! Brilliant, Elly! I'm going to steal it!!
I have found this kind of breakdown and this level of specificity absolutely key to (starting) to get a handle on my real needs.
I used to look at suggestions for activity breakdowns and scratch my head. "Work." "Weekend." Etc. It all seemed hopelessly broad and didn't really help me figure out what I need or why I was struggling to get dressed sometimes whereas other times I had options.
I finally figured out that I needed to dig deeper into what type of work, what type of casual. And also factor climate into it, of course.
My categories are:
A. Sleepwear/ loungewear. I don't need much because I really only wear loungewear per se if I am ill. I do own a cozy robe, though, along with PJs.
B. Gear. This is for any fitness activity and also outdoor stuff like hiking, skating, etc. So...workout bottoms, shoes, socks, tops, hoodies, etc.
C. Comfort casual. This is my work-from-home wardrobe and it is by far my biggest capsule. I want to feel as if I'm wearing loungewear -- but actually be wearing real clothes, LOL.. So it consists mainly of a lot of jeans and knits (winter) and shorts or tube skirts or simple dresses with sleeveless tops (summer). These are the clothes you guys see me in ad nauseum....
D. Smart casual. This is my favourite capsule. It covers city trips/ meetings with colleagues, as well as trips to see my mother, city holidays, and most "outside the home" activities in my city -- going for lunches, meeting friends, running errands, taking my kid places, shopping, teaching classes. It overlaps with some items from column B (I do work for a fitness company, after all), some items from column C (especially denim, knits, and tops) but adds a number of "smart casual" pieces that I tend to wear less often in the house, such as jackets, heels, sarong shorts, etc. It's my main "outside the house" capsule and in formality can slide up and down a scale, depending on the activity at hand.
E. Splashy casual This is for many of my appearances, gallery openings, book launches, premieres, etc. For this capsule I look for trendy pieces or pieces with a bit of sizzle that can be worn with items from column D. Not "sexy" -- since I don't really do that. Just more...noticeable. So...super-flattering tops in great colours or trendy cuts, fab jackets, sparkle, special footwear, higher contrast looks. Also, my suit.
F. Dressy. This is for date nights with hubs, some professional appearances, fancy dinners with colleagues. Sheath dresses, heels, kimono jacket. Suit.
G. Sober dressy. For funerals, memorials, and other sober occasions of that type. Dark dress and/ or skirt and top. Jacket.
H. Travel. The items mostly come from the "work-at-home" or "smart casual" capsule but they have to be easy to move in, comfortable, non-problematic at security, etc. And travel appropriate footwear and weatherproof coat.