Flower Saver is a badge in Paper Mario: The Thousand-Year Door that makes Mario's attacks cost less FP than normal. It costs 4 BP to use. You can find it at the Creepy Steeple, trade it for 10 star pieces to Dazzle, and you can steal it with Ms. Mowz's Kiss Thief from a Crazy Dayzee.

Multiple Flower Saver badges can be equipped at the same time, each decreasing FP costs by 1. However, the minimum FP cost of a skill will always be one, therefore you can never completely negate FP costs.