Dandelions because they're basically a weed plant here, so abundant fresh greens for the buns when it's in season (pretty much any time there's no snow, they grow, at least leaves). I actually like their colour too, rich buttery yellow. It's always fun to find those that have 3-5 stems and flower heads conjoined into one fat tubular thing. I used to be unsettled by those when i was a kid.
Daffodils smell nice. I like those that have white blossoms and yellow inner bits that have orange at the edges.
If it's just for beauty, something with big flower heads and a noticeable smell.
Tpbm, what's something you like to do when alone?