To minimize the time we spend setting up a new project from scratch we collaborated on a template which has all the basics we use in every project.
Every new project we start uses SASS, we've found it's features to save a bunch of time as projects get larger and more complicated. SASS is great for when multiple teams are working on a project at once, with amazing features like variables, mixins, auto prefixing, extending etc. It's relatively easy to get started with SASS, you can use as much of it as you want which is also nice for front end developers that are used to plain old CSS.
We've recently transitioned to using GIT as our primary version control system after realizing the benefits it brings to working on projects as a team. It enables us to quickly see the state of a project and remain agile in our development.