There are many daily creative prompt calendars out there to choose from. The two I've liked enough to actually follow through on (and can, therefore, recommend for fun, interesting, non-cheesy prompts) are FatMum Slim's Photo-A-Day, and TinkerLab's Daily Sketchbook Challenge. The idea is simple: Each day, take a photo or make a sketch (or painting, or collage) that's prompted by the day's word or phrase. If you want to share it, post the image on Instagram and tag it with the appropriate tag. You can then search the tag to see how other people interpreted the prompt.
I just started doing the SketchBook Challenge, and I don't care that I'm jumping in mid-month. This is not a contest. Today's prompt is Rainbow, which got me to pull out a box of oil pastels I haven't touched since high school. (I have a love/mostly-hate relationship with oil pastels.) Then I did some old-fashioned collaging and hand-tearing of shapes, and came up with this idyllic scene you see below.
By the way, here's what the above artwork looks like, uncropped.
Have you tried any daily creative prompts? Which ones did you like? Let me know below!