I know this has been suggested before, but I would do a disappearing 9 patch. I just made one for a baby girl and I'll be danged if I can find the pictures! It was made with 4" strips. I made one for each of my kids last Christmas with 6 1/2" strips. Honestly, they look awful. I used a pink, pale green, and a gold. It's so pretty. I think the size of the strips look perfect for a baby quilt. And it's a super easy pattern to do, which just makes things better. If I can find the picture, I'll post it.
Another suggestion, and I've taken my own advice....when I was looking for not complicated baby quilt patterns, I used the search button at the top of the page and searched "easy baby quilt". Came up with a whole ton of stuff that had me researching forever. I even made a few after I bookmarked the threads.