Thank you a lot for help, I will try fish scented little mice(are these called pinkies?) and I will try to get some more european bass and freeze it for long time to prevent parasites, because its thiaminase safe.
Maybe I could buy some cooled trout and feed pieces of that?
I can obtain a lots of pre-freezed Big-scale sand smelt(Atherina boyeri), do anybody know, if these are safe? These are selled in every supermarket here for human consumption, and are very cheap.

I am building a new, bigger enclosure for my female ribbon now, its going to be ready in few days so then I will post some pictures to the enclosures section and I hope you will like it(and the snake too). Then I will look for some handsome boyfriend for her
Does ribbons need a big water tank or just a bigger bowl is ok?

Thx a lot