I run a small café. Can I fill customers' own containers instead of offering reusables?

Yes, if you are small enough. § 61(1) VerpackDG: final distributors with no more than five employees in total and no more than 80 m² of sales area may meet the § 60 duty by offering to fill goods into reusable containers the customer brings, at no higher price. If you deliver, all storage and shipping areas count as sales area. Part-time staff count as 0.5 up to 20 hours a week and 0.75 up to 30 hours. Vending machines may use the same option (§ 61(2)). § 61(3): for damage from filling customers' containers you are liable only for intent and gross negligence. § 61(4): announce the offer with clear signs, or in your delivery media. See the reusable alternative. VerpackDG § 61