You can make CHECKPOINT by combining CLOUDSTONE BLOCK and BUBBLE WRAP. You can find this item in race category. It takes 0d 20h 55m 48s to grow CHECKPOINT from seed to tree. If you brake this all night long you will get some experience points. How many times you need to hit it? Head to the wiki for more info: checkpoint You get at least 1 seed back (maybe more!) from splicing CHECKPOINT. Gemratio of CHECKPOINT is a mystery. Maybe you can check the wiki for checkpoint Will you get enough blocks to build something? You just have to find out yourself.