OK So here is my idea Its about Adding Effects to arrows
Ideas So Far:

1. An arrow can be used in a crafting bench with a spider eye creating a poisonous arrow

2. An arrow used with blaze powder would create a flaming arrow

3. An arrow used with a ghast tear would create a leach effect draining enemies health and adding it to your own

4. An arrow that uses different ores such as gold,iron,emerald and diamond instead of flint each creating more damage than a standard flint-tipped arrow.

5. Finally an arrow used with a glistering melon would heal used mainly for your pets and if online on a pvp server your friends in battle.