Pixton Comics is a site where people can create comics easily. You can also start with someone else's comic and do a remix. There doesn't appear to be inappropriate content for elementary grades. Besides being visually entertaining, some comics could be used in the EFL classroom. The creative teacher could create their own!
I included "Fall From Paradise" because of its visual appeal, but the next one, First Pitch, could be used as a language activity, oral or written
And finally, here is the strip that endeared Pixton comics to my heart. The premise is two cati stuck with each other in the desert. Here are the first two; he's got about 90 of them!
I've included three pdf files, of First Pitch, Blue (another wordless one), and a selection from Desert Funnies. I hope you enjoy!