Also consider:
- Plyometric box jumps to train explosiveness. Don't be put off by the young guys on Youtube jumping on to high boxes. You can get what you need from lower boxes and just strive to get as high as possible over it as you get stronger.
You won't need a box this high to start:
You can find gym quality plyo boxes at fitness supply stores or on craigslist. I bought a set of 3 for like $100 2 years ago and gave them away when I moved.