Three altcoins under $0.10 with the potential to grow 150x in the future are Metaverse Cash (MCASH), Cardano (ADA), and VeChain (VET). These altcoins are all addressing large and growing markets, such as the metaverse, decentralized applications (DApps), and supply chain management. MCASH is designed to power the metaverse, a virtual world where people can interact with each other and with digital objects. ADA is a more scalable and sustainable alternative to Ethereum, and it is being used to build a wide range of DApps. VET is used to track the movement of goods through a supply chain and ensure the authenticity of products, and it is already being used by a number of major companies. Cryptocurrency prices are highly volatile, and investors should always do their own research before investing in any cryptocurrency.