The fact that the gang was able to create their Tigger costumes in less than a day certainly seems impressive.
It was implied everyone wasted so much time trying to comfort Tigger that they had no time to make preparations for Winter. In the end, Tigger rapidly fixes all of it for them (eg. builds a house for Eeyore, collects a giant pot of honey for Pooh, and a ceiling tall pile of firewood for Piglet).
Roo: The Whoop-de-Dooper Loop-de-Looper Alley-Ooper Bounce... The more you try the more you fly and that's what really counts! (executes the bounce perfectly)
Immediately followed up by the two of them using that bounce to escape the avalanche together.
A blink-and-you'll-miss-it case, but when the others are perched on the tree, Rabbit manages to stop a heavy gust blowing Eeyore away.
How about that one tree managing to hold fast while taking the brunt of a massive avalanche, which had dislodged several other trees and giant boulders, yet the tree didn't move an inch.
Pooh managing to grab Rabbit's hand and hoist him up into the tree just clear of the avalanche. Silly old badass is more like it; he doesn't even have thumbs!