One of the most inexpensive way to add on to your outfit is by mixing & matching bangles. Chunky, floral, animal prints, bright colors...you name it! That extra teal will make any arrangement stand out! 
Another idea is to play up the tribal theme. Neutral colors and nature prints surely will do the trick.
Image Source: forever21.com, elle.com
Ditch the boring ol' blue denim and go for colored ones!
Shopping List:
1. v-neck t-shirt $22 & Jeans $40 (but buy one get one free!) @ Pacsun.com
2. black vans - Journeys.com
Image source: pacsun.com, journeys.com
Tie Dye is back from the seventies! Okay, I'm not suggesting that you take a trip to Berkeley and buy a shirt from a hippie...but you know, Tie Dye can look good when it's done right. Check out my selections below. These are definitely "wallet-friendly" choices ;)
a. Tie Dye Tube Dress - $26.99 @ Charlotte Russe
b. Tie Dye Halter Maxi Dress - $39 @ Dillards
c. Twist Dye Maxi Dress - $24.80 @ Forever21
d. Tie Dye Strip Scarf - @ 19.50 each @ American Eagle Outfitters
You can google the following designer/store sites for more tie dye inspired looks: Michael Kors, Miu Miu, Ombre, bebe, Christian Lacroix, Moshino, Calleen Cordero, D&G and Rebecca Minkoff.
Image source: charlotterusse.com, dillards.com, forever21.com, aeoutfitters.com
Borrowing elements from art, the following spring choices include painterly prints, watercolor brushstrokes, and abstract florals. Infuse your style and bring out the artistic side of you!
Shopping List:
a. Simply Vera Wang Draped Dress - $44.99
b. Arthouse Silk Print Shift Dress - $92
c. Sleeveless brushstroke Print Dress - $88d. Watercolor Print Halter Maxi Dress - $39
Image Source: Kohls.com, Macys.com, Asos.com, Dillards.com