Sara's simple hack for adding variety to Pre-K and kindergarten homework assignments:
My daughter's in pre-k this year, and with it she has "homework" for the first time. And not fun, project homework, but rather rote "practice tracing your letters" homework. Necessary, but not something my 4 year-old or I consider fun. One hack I've found to keep her somewhat focused and continuing to work is to hand her a different color crayon for each letter. I don't know if it's the variety, or my sitting next to her, but this works much better than expecting her to focus and keep going on her own with a single color.