I am having a hard time deciding on a second set of centerpieces. For 12 of the tables I am using three varying height candle holders (tallest one being like 10") with flowers submerged, clear glass rocks in the bottom, and white floating candles. They will sit on a 12x12 square mirror with 3 mercury glass votive holders. There will be a brown table cloth and teal pin tuck runner on each table. For the other 8-10 tables I wanted to do something with some height, maybe with some branches but I don't know if that would look weird with the other tables having short centerpieces. Any suggestions? I don't want to do fresh flowers because they are not really in the budget. TIA!