Seriously, I stink at these things. I can be creative, well sort of creative but not with questions such as invent a new onomatopoeia. My current favorite sound is the one my little Jack Russell makes when he is sitting like a meerkat. The sound is like a errrr. I'm not sure how to write it because the first er is gravelly and then the other rrr's go up in pitch ending in a questioning rr.