I got a DoTerra diffuser as a gift a few years ago (thanks, Chris Harrison) and fell in love with it. The diffusers are great because all you have to do is fill it up with (purified) water, add a few drops of your choice of oil and plug it in. You have the option to run it for an hour, two hours or four hours. The diffusers come in different shapes and sizes, so it's not your typical plastic, eyesore in a room. They also have a nightlight option. Get one for $47 along with your choice of oils, ranging from $13-$50 (depending on the oil scent).
I am a candle-holic. I know it's not a thing, but I think it should be. I normally take a trip to HomeGoods and stock up on a few, but I decided to *splurge* at Anthropologie on this Voluspa candle. I'm glad I did because I can't get enough of it! The candle design is beautiful and the scent is amazing - not to mention, the wick lasts a long time. Choose your scent for $30.
My mom got me this succulent in a glass planter over a year ago and it's still going strong. I've started a little plant collection over the years and love keeping them on my windowsill in the kitchen. It's a great spot for lighting and adds some greenery to the kitchen. If you want to buy a glass planter complete with a succulent inside (like this one), you can get it at any place like Home Depot, Lowes, Target or Trader Joes. If you want to be ambitious and DIY, you can get glass planters at Target or Michael's and add rocks and succulents to it. Buy a completed glass planter for under $20.