Reddit reviews A Small Book of Random Numbers

I'm sure that their book supply is limited, but maybe there's a way to look into supplying prisons with random number books, like this one: https://www.amazon.com/Small-Book-Random-Numbers/dp/1452818363

For a D20, just take two digits at a time and 01-05=1, 06-10=2, and so on, with 96-00=20. Stuff like D6 and D12 would be more annoying, but you could always approximate or just go through digits until you get one that's between 1 and 6. Would work well for stuff like D&D, but probably harder for stuff like gambling since all the numbers are there ahead of time.