You've already seen my Fall Leaf Garland, but the other part of the picture below is my red candles. They came in a two-pack at the Dollar Tree, and each candle holder was also $1, so that's $3 for those.
The sunflowers were left over from my Fall Ribbon Wreath, and the bud vase I had on hand. The roses were left over from hair pieces I made for a group in last year's Nutcracker production, and I scavenged the leaves last year from decorations my mom no longer uses. The mason jars were on hand too.
Originally I was going to fill the jars with small nuts, or dried corn kernels, or something like that, but it's too early to go scavenging for fallen acorns and I never got around to looking at the store, so I found a jar of dried rose leaves (collected over the years from dance recitals and so forth) and used that instead. That makes the total amount I spent on flower arrangements $0.
I found this pumpkin thing last year at Walmart for $8. They had at least three different designs of this thing. I had real votive candles in it before, but when I put it on my hutch I thought floralytes would be safer. I found them at a dollar store in a 3-pack. The leaves were more of what I had on hand or leftover from previous flower arrangements. Total for this piece: $9.
Last, I got these candles at the Dollar Tree for $1 each - they are vanilla-scented so I figure I can use them for multiple seasons.
I was going to put them in mason jars also but they were too big! So I was going to take them back and get smaller candles, but then I thought they might look nice in my candy dishes. They used to be my grandma's . I put more dried roses around them and I thought they looked pretty nice. Total for these pieces: $3.
Five mini-projects (if you count the flower arrangements as two), and the total I spent on them was $15. The best way to save money on decorating is to find new ways to use the old stuff you already have.