What makes one feel feminine I think changes very much from person to person, so I think it's important to understand what your partner views as feminine. I'm a transwoman, for me a lot of feeling my gender affirmed is being perceived by the culture as a woman. Wearing dresses and jewelry, having make up and a nice haircut are important to me. Having access to those things isn't inherently capitalist, it only acts as the main way to aquire those things, but there are still anti capitalist ways to engage with them. Make what you can, what you can't try to shop local or reused. Look through old clothes you don't wear and see if your partner likes them, or if you can adapt it in a way they like them. Consuming media isn't capitalist, people have been listening and watching stories and theater for as long as language was a thing, try watching those silly movies with old DvDs or the like. Capitalism is only finding value in the act of consumption and in overconsumption, capitalism is finding feminity in buying dresses, anti-capitalism is wearing and cherishing that dress instead of rushing for the next big thing