Healthy alternative to bread crumbs
Crushed cornflakes can be used instead of bread crumbs.
Another alternative is crushed whole-wheat rusk biscuits.
These are healthier options which are easily available in most home and are inexpensive too.
Substitute for bread crumbs in meatloaf
Very different flavor profiles.
I personally wouldnt do it and would instead make breadcrumbs from scratch; its not hard to do, and you can flavor them however you like.