Here are some of my favorites and what I have purchased, tried, and LOVED:
Alphabet Press Textured IMpressions Embossing Folder
Great for those Hi, Hello, and Thank you cards
Epic Day Washi Tape
Ah, the very first washi tape I've ever played with. Neutral, versatile and cheap!
Homemade Holiday Framelits
I have a full time job at a realty company and plan on putting these to good, thorough use!
Texture Boutique Embossing Machine
If you're not sure you want to invest in the Big Shot yet, give this boutique size tool a whirl. You'll see soon enough how you can't create truly awesome backgrounds without an embossing machine, so just think about all the die cuts and shapes you can do with the Big Shot!