If you have tasks that do not require you to have web access, your desk, or anything else that can keep you tethered to one place, take those tasks somewhere more fun and refreshing. Get some fresh air, enjoy some scenery, and get out of there!
For me, tasks I can take with me that require little or no technology include database designs, book research, website wireframe sketchups, flow/process planning, and even just general brainstorm sessions with pen and paper. It’s always good to get out whenever you can!
Are there any tasks you can take with you?