Cryptocurrency Online-Shop Help

Hey Steemians,

though my shop has been gaining more and more customers over the past three years I would like to open an Online-Shop to offer my tools worldwide, but I would like to give my customers the possibility to pay in Cryptocurrencies.
My first question is what tools/programs can I use without having hundreds off different wallets for each Currency???
Further more I'd like to know what kind of tools can I use that the customers can choose easily which currency he/she wants to use???

Please let me know your ideas and/or a person/company helping to realize this upcoming project!

Kind regards Oli "Tanemahuta" Reese