I think antimatter can be used for engines and power sources . Since it's so powerful you can contain it in a special Antimatter container, you can use the antimatter container and use it as fuel to power a antimatter engine. Since it is so powerful you use it to build the bigger engines for bigger spacecrafts. You can find antimatter in h2 which you can find in a gas giant such as Jool. Antimatter can be collected by a harvester that you can build and place it in a gas giant orbit. You can also sell it for lots of money since it is a harder and more powerful resource, if misused you can blow up your ship and any other surrounding ones. You can also maybe turn it into bombs to destroy your friends ships if you are fighting or doing a war RP. Just think theses are some of the possibility's you can use with just one resource and they might add hundreds more.