Since I haven't got any potpourri, I thought of dabbing the oil onto cotton balls and placing them around the house. But then, it'd be weird to have random balls of cotton lying around in random corners, no?
So I took out my stash of scrap paper and Voilà!

Dem boring ole' cotton balls...

... are now 110% more attractive and presentable! :)
One for the toilet...

One for the laundry area...

... And the other three blu-tacked around the bathroom/living room.
When the scent wears off, I'll only need to dab a few more drops or replace the cotton ball, and they'll be good as new. Easy-peasy!