Plant it to grow Mushroom. These are surprisingly bouncy. Hold Jump as you land for maximum bounce.
Mushroom Seed price in Growtopia: sells for about 18/WL, buyers pay about 25/WL (median of 46 offers from community Discords, past 30 days). Live price chart and the latest buy and sell offers.
Recently sold at: Y3QN, I0YC, FN50, SIMALA, IMUPMALL