Creating new things, e.g. electronics is a good outlet for when I need to feel productive and creative. A lot of the work I do day to day translates to the craft.

And then I get to pick how to enclose the project :) that's my favorite part since I get to trawl design magazines and blogs for cool ideas: https://www.designboom.com/ https://www.yankodesign.com/

Watching other people be creative helps too. In addition to the design blogs, Twitch has a lot of art streams that help unstick me.