Ask HN: Bootstrap Design Help for a Developer?

Hi HN, what are your goto tools and resources when using bootstrap. Specifically, to make bootstrap look less like bootstrap. I'm working on a side project and as with all my side projects, I really struggle with the design.

I've tried using pre-built templates and themes before but once I've finished modifying them to match my content, they don't look as good anymore. The thing that works great for me is to just use standard, unmodified bootstrap. It stops me worrying about the design and everything looks presentable. But now the project is nearly finished and I want to customize the design a bit.

https://bootswatch.com/ is great. Are there any others people can recommend?