You need a designated grease home. A mason jar is the standard. A repurposed pasta sauce jar works great. Do not use a recycled yogurt container—it’ll melt and give you a sad, plastic puddle.
I once used a cute ceramic mug. It looks fancy, but it’s a nightmare to clean. The grease stains the bottom, and you’ll feel like you’re scrubbing a crime scene. Glass is your friend. Clear glass, so you can see the layers of pure, buttery fat.
Find a jar with a lid. A tight lid. Because the smell of cold bacon grease is like Proust’s madeleine for your dog, who will then lick the jar at 3 AM. Trust me.