ItemRecycler is a light-weight plugin for recycling/uncrafting unwanted items. It's extremely easy to use. Recommended for semi-vanilla, survival servers. It supports the recyclement of more than 150 items, and it has 2 types of anti-duplication security. The plugin is also very customizable. You can change all the messages and edit the GUIs. You can also recycle worn items and the plugin will automatically calculate the outcome. The plugin supports permission based success-rate (donators can have a higher chance of success). The recycler block can also be spawned or crafted and then right-clicked.
Read more about the plugin or purchase it at: https://www.spigotmc.org/resources/itemrecycler.56192/