Personal projects can provide an energizing break from regular responsibilities and can serve as a source of innovation for a company. Atlassian, a developer of collaboration software based in Sydney, encourages creativity during its "FedEx Day." During this event, all 62 employees can work on anything that excites them -- as long as it is somewhat related to Atlassian products or processes, can be completed in the allotted time, and is fun. Employees have from 2 p.m. on a Thursday until 4 p.m. Friday, giving them roughly 24 hours to deliver a project (thus the name, FedEx Day). Then at a presentation, participants show off the results of their projects. From these ideas, Atlassian has adopted more than a dozen projects, ranging from product upgrades to process improvements.