The Mr. Men and Little Misses make inventions. (or lend an ice pack or 2 as the narrator states)
- Miss Daredevil's Plot: Miss Daredevil invents a rocket on Good Morning Dillydale that can do anything but lay an egg. Mr. Quiet tries it out.
- Mr. Grumpy's Plot (ONLY IN THE US VERSION!): Mr. Grumpy introduces a tickle-proof coat to prevent Mr. Tickle from tickling anyone along with a book called "100 Reasons Why Happy People Annoy Me".
- Mr. Lazy and Miss Calamity's Plot: Miss Helpful invents something that will do Mr. Lazy's house work. Sadly, it only works at Miss Calamity's house.
- Mr. Rude's Plot: Ms. Chatterbox helps Mr. Rude be polite by inventing a polite-o-phone.
- Mr. Scatterbrain's Plot: Mr. Scaterbrain invents a Remember Box on Good Morning Dillydale to remember everything.
- Mr. Bump (does not speak)
- Mr. Bounce (only in the US and Japanese)
- Mr. Happy
- Mr. Grumpy (only in the US and Japanese)
- Mr. Lazy
- Mr. Messy
- Mr. Nervous (cameo)
- Mr. Nosy
- Mr. Persnickety (only in the US and Japanese)
- Mr. Rude
- Mr. Scatterbrain
- Mr. Small
- Mr. Strong (does not speak)
- Little Miss Chatterbox
- Little Miss Calamity
- Little Miss Helpful
- Little Miss Whoops (does not speak)
- Mr. Happy: Aaand we're back! Mr. Scatterbrain was just showing us his new invention...
- Mr. Scatterbrain: I was? Hmmmm. Well where is it?
- Miss Sunshine: It's on your lap. At least I think it is, or else I'm in the wrong show...
- Mr. Happy: Well, That's all the time we have for invention day!
- The title cardis missing on the televised version in the US
- Mr. Grumpy's Video is in this episode.
- Miss Chatterbox probably made the Polite-O-Phone in response to her plot (when she hosted lunch) in Books, when Mr. Rude was rude at her lunch party.
- After Mr. Messy scrouged through the garbage, all of the mess he made in the next scene vanished (except for the boxers)