I have very vivid memories of an old movie- cartoon from when I was I child.
It was about a kid who was made small and he was able to go to an ant kingdom. This happened in a living room, they had a thick and big haired carpet where he would get lost when he got smaller, then there was something with a vacuum cleaner. Some scenes are filmed, some are cartoon, like in the ant's kingdom.
It's around 20-25 years ago. At that time it looked like it was a new movie. Maybe even 30 years ago, if it took time to get on screen in my country.