[Koha] Bar code scanners

Hello...We are just beginning to explore installing Koha as our ILS. (Currently we have none.) We are running a Linux network, affiliated with the K12LTSP project (www.k12ltsp.org). I'm wondering about bar code scanners and bar codes. Are there any scanners that you know work with Koha? We want to buy the most economical obviously, but want it to work, and most of them appear to be plug and play. Any suggestions? Thanks... Elizabeth Spruill Rocky Mountain School of Expeditionary Learning (RMSEL) Denver, CO