DIY Prep Before Fall – What Am I Missing?

I just moved into a 1970s house and one of my neighbors gave me a tip I’d never thought of: pack steel wool in the siding corners to keep mice out. It got me wondering what other quick DIY steps I should be doing before the cold sets in.

So far I’ve heard about sealing gaps with foam, draining hoses, cleaning gutters, and even using a thermal camera to check for drafts. I’m sure I’m overlooking a bunch of basics.

What are your go-to DIY projects to prep your home for fall and winter?