this is my first post here:)
Your tie posts were so great I brain stormed and came up with this collar cover for my dog Zooey.
No sewing required-too lazy right now:). What I did was, cut off the narrow part of the tie-I didn't measure, just cut it off before it was getting wider.
Zooey's collar is just a clip buckle dollar tree one-just feed the collar through the tie, using the prong end was easier.
It's like feeding elastic through a casing.
After you get it through just tuck the raw ends under-or you could fabric glue them down before you slip the collar in.
It's supposed to look scrunchy-the tie piece will be much longer than the collar. I've seen similar things at the pet store for like five bucks.
You could makes several of these for a whole dog wardrobe.
Zooey is a large dog(50 lbs) but I'm sure it would work on a small dog though it would be more poofy.