If you are suffering from a bit of creative block or just plain don’t have time, then UI kits will be of good use to you. They are great starting points for project. You can gain new ideas and techniques to build your arsenal. I hope these will help you get out of that creative rut and gain some new ideas.
A nice simple UI kit by Piotr Kwiatkowski . This kit offers mini widgets that can get you thinking of new ideas.
This Kit has some amazing colors and resources. It should give you some ideas for your next user interface.