Adaptation Displacement: Subverted. People know about the books, but tend to forget Noddy was on TV well before the 90s rolled around. Need proof? Here is the Title Sequence for a Noddy programmer in 1975, and here is the full episode from The Further Adventures of Noddy c. 1972.
Bizarro Episode: Two in "Make Way For Noddy": One episode had Mr. Plod shrink into a size of a mouse. Another episode has Clockwork Mouse turn into a giant even bigger then his friend Mister Jumbo.
The Christmas Special for Toyland Adventures has Noddy feeling nervous and shy for meeting Father Christmas for the first time. However when Father Christmas visits Big Ear's toadstool house along with Tessie. Noddy gets more anxious until he finally sees him and decides to give him a gift by singing him a song and later waving white hankies. Then there's the ending where the entire citizens of Toy Town are singing about the joy of Christmas and each of them wish the viewer a Merry Christmas before the credits role.
Ear Worm: In the US VHS release of Toyland Adventures contained a song such as a song dedicated to "Noddy and his ring""I Have A House" and "Noddy The Little Nodding Man". The original British theme song to Toyland Adventures is also catchy to watch - especially the credits version.
The theme song to "Make Way For Noddy" also counts.
Hilarious in Hindsight: In one episode of "Make Way for Noddy", Noddy enters a Mirror Universe where (among other things) Sly and Gobbo have the opposite personalities, with Sly being the smart one of the duo and Gobbo being the dimwit. Come "Noddy in Toyland", those are their personalities all the time.
Moe: Almost the entire show qualifies, though Tessie takes the cake.
Somewhat averted with the CGI series, since the goblins are far more mischievous and have wreaked much more havoc than in the older series.
The CGI series is dumbed down from the stop motion cartoon however, with more Edutainment Show qualities and many of the cast's Jerk Ass qualities being downplayed. And apparently it has gotten worse with the second CGI series, Noddy in Toyland.
Tear Jerker: "Noddy and His Bell", as well as the book it's based on, "Noddy Gets into Trouble", when Noddy is falsely accused of theft, and is ostracized. It's even worse in the book, as he actually breaks down crying because of it. Happily, Tessie still believes he's innocent, and helps him prove his innocence.
They Changed It, Now It Sucks: Generally, each Animated Adaptation takes further liberties with the franchise, omitting or altering concepts and characters and restyling the format. The earliest examples of this were received better due to making only ethicalchanges for the large part, though the CGI series tend to get flak for making heavy creative changes. Make Way For Noddy was considered this trope compared to older fans of Toyland Adventures, though ironically became more favoured compared to Noddy in Toyland and Toyland Detective.
Big Ears in "Noddy In Toyland" looks a bit off compared to his previous appearances. He mostly looks dead eyes most of the time.
Values Dissonance: Before Sly and Gobbo came into the Noddy series in the 70's, there were four black faced dolls called "The Gollies" who would cause mischief as well as not only taking away Noddy's car but including his clothes and hat!◊ (They were eventually redrawn as goblins). In an article made to celebrate Noddy's 40th anniversary, Blyton's daughter stated that the Golliwogs won't make a comeback in the series for obvious reasons. similar can be said for Gilbert Golly who was a naughty school boy that would later get replaced by Martha Monkey. However there was one Gollywog that wasn't mean named Mr Golly who previously owned Toy Town Garage who got removed in the early 80's for reasons unexplained.
Viewer Gender Confusion: Noddy is actually a BOY! He's probably mistaken for a girl because of his eyelashes and being voiced by a girl. Big Ears... well... not so much...
Martha Monkey can be mistaken as a boy due to the way she dresses. She did wear a pink bow in Toyland Adventures and the books. But since this isn't present in Make Way For Noddy this can cause some viewers to confused her gender.
Villain Decay: Mild case. While the goblins, Sly and Gobbo's antics were never much more than mean spirited mischief, they came off as much more sinister and cruel in early works and even a bit creepy to younger children. The CGI series punctuated their buffoonish aspects more, making them more silly and likeable antagonists.
Wangst: An episode of the CGI series has Tessie despondent for several days due to a balloon she owned popping. She doesn't recover until Noddy gives her several dozen more. Being a Moe, she still makes it sort of adorable however.
Tessie in the books was easier to reduce to tears when ever Noddy would scold Bumpy dog depending on the situation.