This resource from the Comic Relief Red Nose Day website would make a nice quick E1-2 English/ESOL onscreen writing task. The PDF has type-in boxes but could also be printed. Learners think up their own events (perhaps through paired discussion or small group discussion?) and then each completes poster, writing/typing in complete sentences as appropriate for level. (I.e. simple sentences for E1 and a mix of simple and compound sentences for E2).
Note - use the link below (NOT the one above) to go straight to the PDF file.