[Koha] data for testing

Hello. I'm curious if anyone out there has any sample library data I could use to populate my koha system and test its usage and performance under high load. I'm hoping to populate my entire koha database with books, customers, circulation records, etc. I don't plan to use the data for any purpose other than testing, so it could be entirely make-believe as long as it is representative of what a real library would have in its database. Any idea where to find such data? -- Scott