I use my slow cooker nearly every day. It doesn't use as much power, either, as the oven.
I have stacks of recipes books for slow cookers and even do some puds in them.
Also in Autumn, our old landlord asks us over to clear off his apple trees. It's just him and his wife and 4 fruiting trees. There's too much.
I make apple butter in the slow cooker and can it. It lasts all year and is fine to substitute for oil in a lot of muffin recipes.
I bought a chest freezer used and it's worth it's weight in gold. Whenever I see butter or some cheeses on offer, I stock up to use in my baking.
Old bread can be croutons, treacle tart or blitzed up into breadcrumbs to freeze.
Make pizza dough in the slow cooker and freeze it. When I feel lazy about tea, take it out, along with spag bol sauce I batch cook and freeze, some cheese and voila, there's tea sorted.
I've got some meatballs in the slow cooker right now. Just need to do rice for tea.
I'll sling a chicken in there tomorrow to use for lunches all weekend as we're having guests and the weather is perfect for picnics.