Could you made a blacklist in the config where you put item ids that wont get rolled back please?

It's already implemented. See the wiki ( https://github.com/nitnelave/CreeperHeal/wiki/advanced-configuration-guide ) and the default config files ( https://github.com/nitnelave/CreeperHeal/blob/master/src/main/resources/world-advanced.yml ), the "restrict" part of the world config.