Just because you don't want to shell out the dough to buy something, doesn't mean you can't own it. Or at least the cheaper knockoff version of it. That's fast fashion for you.
I'm not the biggest fan of knockoffs. After you've seen every Tom, Dick and Harry on the streets of Hong Kong with a monogram LV tote or a very passable Bottega woven slouchy bag, you'll know what I mean. But to me, "taking inspiration" is kind of different from knocking off. For example: copying logo and intending for your bag to pass as branded = bad. High street retailers doing the red sole a la Louboutin = not good. DIY-happy bloggers studding jeans and cutting holes in leggings and shredding tights and tees = legitimate. Etsy shop owners taking a hoop of fabric and attaching two long strips of fabric to create some version of the super-convertible Butter by Nadia dress I mentioned I'd been wanting for two years: totally okay in my book, as long as it gets me closer to the object of affection.