Is there anything you've liked well enough to develop brand loyalty?

Nope

I've become very loyal to Gildan t-shirts, boxers and socks. Their stuff is inexpensive and seems to last forever. I'm extremely loyal to Hellmans mayonnaise too. Don't even try to give me any other mayo.

Yes Bic velocity colored pens.

Purell hand sanitizer (but I'll take anything if desperate enough out in public)

My husband has to have Alta Dena milk.

Luvs diapers

Challenge whipped butter tub

Pretty much anything Trader Joes puts it's name on.

To me, some things just work too well to change, and  I am sold on the following brands:

Acura, New Balance, Under Armor, Bacardi, Omega, Sig Sauer, and Rolling Rock.

Yes. If I like something, I stick with it.

Ford, DeWalt, Rolling Rock and Husqvarna.

Adidas shoes with boost soles. Ultraboost and NMDs. These days they're my favorite and most comfortable athletic shoes. They can be a pain in the butt to buy since they've developed a rather large sneakerhead following. They're also starting to make Stan Smiths with the soles too.