There are a few things you can do with a broken blender. You can take it apart and try to fix it, you can use it as a decoration, or you can throw it away.
If you want to try to fix your blender, you will need to first identify what is wrong with it. Once you know the problem, you can research how to fix it online or in a repair manual. If your blender is beyond repair, then using it as a decoration may be your best bet. You could turn it into a planter or vase, or even use it as part of a sculpture.
If neither fixing nor reusing your blender appeals to you, then the best option is probably to just get rid of it. You can recycle most of the materials, but the motor and blades will likely have to go in the trash.