Outside of your body, your bedroom is your most important temple. It’s where you spend the first and last minutes of each day and where you spend precious hours sleeping, or er, not sleeping? Let’s be real: It’s your *happy* place—or at least it should be!

“If you can recreate your space so it feels warm and inviting, you’ll love spending time there even more,” says Alessandra Wood, director of style at MODSY, a new interior design service that helps you create your home online. She’s a proponent of the theory that sad spaces can make for sad people, and that changing things up can really make a difference in how you feel. “Psychologically speaking, pops of color change the way our brains react to spaces. Certain colors, like yellow, create happy energy, while green incites serenity. A blah room might make you feel just that way.”

If you’re verging on blah, fear not. A makeover doesn’t have to drain your bank account—great news for those women saving up for their next wellness retreat or 10-pack of spin classes. Here are seven under-$100 ways to totally change up your space just in time for warmer weather.

Keep reading for tips and affordable items that will transform your bedroom.

Re-style your bookshelf

“Take a moment to get rid of clutter and reorganize your shelves,” says Wood. “You can add a new, small piece of art or decorative objects and sculptures. Pick up new pieces while you stroll the flea market or in your favorite little boutiques.”

Shop bookshelf additions

Honeycomb Mercury Glass Candle $7

Chabi Chic Moroccan Glass Vase $48

West Elm Stone Bookend, Set of 2 $79

Refresh your pillows

“One of the easiest ways to add a pop of color and a bit more style to your bedroom is by swapping out your throw pillows,” says Wood. “You can save a bit by buying new throw covers and reusing your existing inserts.”

Shop throw pillows

Rizzy Home Textured Woven Pillow $20

Essential Home Mongolian Faux Fur Square Decorative Pillow $14

Room Essentials Cream Dyed Yarn Geo Fringe Throw Pillow $14

Mix it up on the walls

“Sometimes the best way to make your space feel new is a fresh coat of paint,” says Wood. If you’re up for a DIY moment, pick up a gallon of paint and create some drama via wall color. Paint just one accent wall, or all four for more intensity.” Wood also loves adhesive wallpaper, which is a great (and temporary) solution for anyone who isn’t allowed to do anything permanent with paint.

Shop wall art

Keith Haring Love Heads Print $40

Tempaper Big Shot Silver Self-Adhesive Removable Wallpaper $125 for one roll

Wallshoppe Pacifico Palm Removable Wallpaper $58

Go green

“Add life to your space by literally adding life,” says Wood, who is just as obsessed with home jungles as the rest of us are. “Small cacti and succulents usually run less than $5 a pop at hardware stores. Plant them in budget-friendly white planters. If you’re looking for a larger statement, add a tall indoor plant to the mix.” Instead of ordering from fancy online retailers, check out your local wholesalers for the best deals. (NYC peeps, head over to the flower district for some serious steals.)

Shop plants

Spider Air-Purifying Plant $12

Mini Succulent Cement Pots $16 for 4

Snake Plant Tabletop Plant $40

Up your sheet game

Wood suggests picking up a fresh set of sheets to make your bedroom feel new again, and she’s a big believer in discount hunting at stores like TJ Maxx and HomeGoods. (Wood once scored a set of Marimekko sheets seriously on sale.)

Shop bedsheets

ienjoy Home Collection 3 Piece Puffed Chevron Print Duvet Cover Set $25

Urban Outfitters Josie Floral Sheet Set $99

Zara Home Watercolour Stripe Print Top Sheet $60

Invest in drapery

Investing in drapes might feel like one of those “adulting” things you’ve never felt *quite* ready for, but now’s the time—especially because “investing” doesn’t have to necessarily mean breaking the bank. “Drapery adds softness to the space and fills up bare wall space without cluttering. I always opt for neutral colors and love linens and natural fibers,” says Wood. “Hang them as high as possible and make sure they touch the floor, in order to draw the eyes upwards and create the illusion of a higher ceiling.”

Shop Window Drapes

Urban Outfitters Averi Pompom Guaze Window Curtain $59

Anthropologie Sorella Curtain $98

Zara Home Overlook Washed Linen Curtain $69

Get artsy

When all else fails, add some art. “Art is a great way to personalize your space and adds a thoughtful refresh,” says Wood, who suggests picking out a piece from your recent travels or one that symbolizes a great memory. To keep it cheap, look for artist prints on sites like Etsy, or reproduction photos on Art.com. Or, try something totally unexpected like a DIY wall-hanging.

Shop art

Silver Clouds Installation Giclee Print $80

Black and Gold Woven Wall Hanging $100

Your bedroom isn’t the only place that deserves an affordable makeover: Check out these  under-$100 hacks for your bathroom, then book yourself a celeb-approved facial with all the money you saved on renovations.