I have a pension for petite and simple things. I know a lot of brides arent a fan of large height seeking centerpieces. Sometimes centerpieces like that simply dont fit into the budget either. An adorable option to consider is a cluster versus one stand alone centerpiece.
Oh Happy Day has a great DIY Tutorial on making these wonderful paint dipped baby food jars that can be used for a variety of things, but in this instance as flower holders. Dip these lil beauties in one of your colors & set up some sweet petite arrangements to fill them. If you dont want your centerpieces to be one level, one height, consider using 1 or 2 large old books stacked, even a box of some sort, and set some of these around the base as well as on top.
There are all kinds of ways to be creative without spending a ton. These are a wonderful alternative to large centerpieces. As well these lil sweeties can be easily used to decorate cocktail hour, your dessert bar, even dress up the bar area of your reception.