If I'm not mistaken Miranda Panda only appeared in one cartoon, "Scrap Happy Birthday" where both Andy and Miranda look and act more like Mickey and Minnie thanks to Fred Moore's design. She mainly appeared in the comic books.
Lil' Eightball appeared in only three cartoons in the late 1930's but would also later appear in the comics. I've never had the good fortune of seeing any of the Lil' Eightball cartoons and with a character looking like that it's safe to say they won't be released on DVD. If Woody isn't coming to DVD there's no way in hell this little guy is.