1. For work needing graded, I have set out a stack of paper trays in order to have one tray per class period. Anything needing graded goes into the appropriate tray. I also have a set of identical trays for work that has already been graded and needs passed back.
2. I use one more stack of 5 paper trays that are labeled Monday-Friday. I copy all of my handouts for the week on Monday, so these trays help me keep those papers organized until I need them.
3. Lastly, my favorite addition of all! I bought 3 3-drawer carts (I didn't put the wheels on them.) These 3 carts fit perfectly until one of my work tables. I have labeled each drawer with a type of handout (bell work, interactive notes, quizzes, labs, etc.) When I am done with a handout for the day, I just throw it in the appropriate bin. The handouts end up in chronological order, so whenever I need to find one at a later time, they are easy to find. I plan to place the contents of the bin into the recycling bin at the end of each unit or grading period.
None of these solutions are complicated, but they have sure made a difference in my room.