The future of Killeen really does look bright. And when I say "young," I mean as young as five years old, already dreaming of starting their own businesses. Turning A Hobby Into A BusinessLater, she began making mini cakes and eventually expanded into giant gourmet cookies and other delicious baked treats. Around Killeen, people started talking about how amazing her cookies were, and before long, what began as a hobby turned into a thriving business. Top 10 Summer Things To Do In Killeen With Youth Looking for Killeen's summer plans?