What are some of the BEST non canon anime / Filler episodes specials or movies?

Its kinda hard to actually find GOOD filler since the story is always weird cheap and sometimes out of charachter.
Well closest i can get is honestly the tsukuyomi filler episodes since they werent actually bad but it doesnt progress the story but its interesting i guess

Paranoia Agent EP 8 is the best filler I ever watched, caught me completely off guard

I'd go with Sarada learning medical ninjutsu on Boruto, They really gave her a cute expression on her face and how she cried and called sakura "mama"