In the last couple of weeks I've had a chance to visit some areas within a 30 minute drive of my house that offer some interesting subjects to photograph: small waterfalls, old mills, outdoor sculptures, suspension bridges, ponds and lakes, historic buildings and ruins. I happened to visit these areas on cloudy days, but there were plenty of photo opportunities.
I've also been practicing seeing (without a camera), whether I'm driving to work, out with the family, etc., I'm looking for interesting subjects (in terms of contrasts, lines/shapes, textures, etc.). This has the double advantage of being a skill I can use when photographing both exciting (and obvious) subjects (waterfalls, etc.) and mediocre ones that require creativity.
When I first got back into photography recently I thought I was most interested in "landscape" photography, and while I still want to photograph landscapes, I'm finding my interests are more diverse.
This has been very helpful - thanks!