I've been playing around with video content for the RoadToGrammar channel on YouTube.
Here's what I've come up with so far (feel free to like and subscribe - it'll encourage me to make more):
5 Idioms: https://www.youtube.com/watch?v=w2Mfz_Ks8fc
FEW vs a FEW: https://www.youtube.com/watch?v=OAzCJ-td26w
SOMETIME vs SOMETIMES: https://www.youtube.com/watch?v=3G8itcPFess&t=1s
Screenshot from the FIVE IDIOMS video: