HI @Pnurse as an active sitter and also an owner who engaged sitters for my home in Canada (I’m one of those full time sitters, it keeps me fully connected with our community) it’s a very personal thing and will often depend on the relationship which develops.
As an owner I always brought something home for my sitters (I had no pets to care for and was generally gone for a min of 3 months, pet sitting and working remotely) I had one sitter who joined a quilting class and left me the most gorgeous quilt as a thank you.
As a sitter I have been given many lovely gifts which are hugely appreciated but I always impress on owners it neither expected or necessary. I must say I always leave my owners a little something, but again that’s my personal choice to do so.
It is very personal with no obligation whatsoever, on either side .