[plutonian]

Some more...

Take a random item that's near you and study the colors you see. Then create an OC with only those colors.

Draw what are 2 things you'll bring with you to a trip at Mars/the past/<interesting place> ? You'll be staying for a month.

Draw your OC's headshot on a bill.

Draw your a item that might have a meaning/really important to your OC.

Draw your OC attempting to devour a golf ball. Yup.

Draw what your OC might had done if they get arrested. <perhaps stealing a banana phone?>

[firewhiskey]

draw something based off of your favourite quote

[TheTinDog]

draw what your fursona would look like if they got a job

[MTT-Brand Cute Juice]

Draw what you think your best friend's first CS (can't spell Okeaki - Okaikei?) drawing would look like.
Draw your OC playing the bagpipes.
Draw your OC when a McDonald's Big Mac is set down in front of him/her.
Draw your OC clinging to your foot.
Draw your OC yelling at the observer.

[Bayleaf]

Draw yourself (or your OC) dancing ridiculously

[Star Fox]

Plot twist: your fursona/OC is now the main character in your favorite movie/TV show!

[kittywolfwarrior]

Draw your favorite book character!

Draw your oc at school!

[tikitiki6]

maybe...make your own 2 or 3 gen pet or draw you as an animal

[darkenedmammal]

Draw your OC/fursona/persona as a Mary-sue/Gary-sue

[knifekind]

Draw your fursona/OC as your favourite fictional character from a TV show/anime/book series etc.