Here you have access to the evidence produced at the B'More Debate Institute. You can download it and print copies. There are a lot of good cards here, and it is a good start for novice, JV and Varsity debaters. You will probably want to pick and choose and add your own cards.
Here is the entire BEAST packet (this is the "novice evidence set"). NEW - here is the "light" version for newcomers: The Beastie!
Affirmative Cases
Homelessness Aff
Unalien Immigration Aff
Urban Gardens Aff
Nommo Aff
On Case Negative
Homelessness Neg
Disads
Politics DA
Dollar DA
Counterplans
Courts CP
States CP
Kritiks
Capitalism Kritik
Other
Topicality and Theory
Fragmentation (Neg DA/Case turn)
Fragmentaion Aff Answers
Framework
Spilly Mini File One
Spilly Mini File Two