Those stretchy headbands work well because they are not tight like scrunchies (some scrunchies are way too small for dogs) and they are a bit easier and less bulky than snoods. And cheap! As long as the dog has medium to short ears they work well. A snood is better for longer ears or to keep the ears back more securely.
The cat pic was really funny -- it is rare for three of the four cats to get into a pile anyway (usually they stick with twos) and then rarely will they curl up right with Jaspar (except Quincy the Pest who would devote his entire cat life to Jaspar if Jaspar would let him. I swear Quincy is far more interested in the dogs than the other cats and probably loves Jaspar more than me ).