The great landscape, your new room, every Spring until the end of every Autumn.
A good friend once told me, "Doesn't it feel like your home has been expanded a few extra thousand square feet, as soon as the weather turns better? And every plant you plant, is new decoration for your new room?" When she said it that way, I didn't feel so bad about spending all my time in my new room and neglecting my interiors especially since I was outside every spring until the end of every Autumn.
And I never felt bad about spending money to buy a plant. Not.a.single.one.EVER.