My small step today was putting some insulation over the attic stairs. This is the $40 Amazon kit I got. Very easy to install.
https://www.amazon.com/gp/aw/d/B07N6...mob_b_pd_title
Apparently the attic stairs can lower your attic's effective R-rating by 20% or so.
https://www.energyvanguard.com/blog/...lding-Envelope