I feel awkward putting in a plug for myself here, but I post cards on my YouTube channel that I think are quick and easy. I have a toddler at home, so time to craft is limited, and while I love to color, I would rather produce more cards than spend hours on each one these days. My YouTube Channel is MplsBetty
I follow many people on YouTube, but here are a few I have enjoyed watching recently for inspiration:
Prairie Paper & Ink (AmyR) - She does more elaborate cards, but so inspirational
The Creativity Cave by Dena Rekow - Stampin up, but have used several designs she has shown with other product
Michelle Short - CAS style
Jill Norwood - Her christmas tags are fabulous
Ellen Hutson - Love the cards posted here
There are so many more, those are just a few that I can think of off the top. thanks!