How can I make delicious use of bread loaf ends?

A whole article on this topic at Food52: https://food52.com/blog/search?q=bread+heels

This is honestly one of the best things I've ever tasted. It is completely decadent, but it is so, so worth it: http://thepioneerwoman.com/cooking/2012/08/baked-french-toast/

Crumble them with potatoes & seasoning to make Potato patties for my son as part of his school lunch
https://food52.com/recipes/18996-potato-patty-sticks

Considering it's almost summer, a Panzanella salad might be nice :-) fresh tomatos!

I like to add stale bread to romesco sauces.

You can use bread to thicken some soups (for example, in Deborah Madison's Vegetable Soups cookbook). I was skeptical but it is quite nice.

Bread & butter pudding.
K ... That makes me hungry!

I freeze them til I have enough for French toast for the family.

Bread crumbs, croutons, Welsh rarebit - there's a muhammara recipe on here too www.food52.com/recipes/6492-how-do-i-love-thee-muhammara

Make a crusty cheese toast (sorry, I just don't have a better word for it). Heat a non-stick pan with a little bit of butter. Grate a hard or semi-hard cheese and press into the bread. Take the bread and put it cheese-side down onto the pan and cook on medium high heat until the cheese is somewhat browned and melted. Then enjoy!

I highly endorse these seven options: http://f52.co/1q0FgUC. Also going to echo other commenters and suggest homemade breadcrumbs -- much better flavor than store bought!

I usually make bread crumbs with them. It's fun to mix them with a fresh herb for a special breading.

Bread puddings, french toast, breadcrumbs, bread salad!

You could make bread kvass! It may sound odd, but for the DIY type cook, it's really easy to make. Traditionally it's made with rye break, but you can make it with any kind of bread. I like to make cinnamon raisin around the holidays. Here's my recipe for that, but you can adapt the seasonings for any type of bread!
http://phickle.com/index.php/cinnamon-raisin-bread-kvass-drink-your-bread/

I think it's always fabulous to have fresh toasted bread crumbs on hand. Buttery toasted croutons for a spur of the moment Caesar salad are nice too.