More snack ideas:

Lunch meat spread with butter or cream cheese, & rolled up in a leaf of lettuce (or just rolled up and eaten as is)

Liverwurst mashed with butter or mayonnaise, in celery "boats"

A small cup of homemade broth, served hot or warm, with some fat left floating on top

A small handful of almonds, or other balanced nuts or nut butters

A small serving of plain pork rinds, with homemade sour cream & onion dip (most pork rinds are far too salty, but I've found a local brand that's fine; you might try checking a Hispanic grocery store)

A piece of double or triple creme Brie