AssemblyTube has lots of Assembly ideas. This can make it difficult to get to what you want quickly.
Sorting can help.
Here's how to do it.
Go to the section you are interested in e.g. KS2 Video Assemblies.
Look at the header to the section and click on the white areas like this.

The Assemblies will sort into the order of the heading you clicked on.
The triangular arrows let you reverse the sort order.
Simple but effective.