Another pinner said "This website is full of great organizational tips and tricks. 52 weeks = 52 projects WARNING: Start looking through this website and you will get sucked in for an hour or more. I could have cleaned up a lot in that hour.
Use a dish drain from the dollar store to organize plastic lids. Use a dish drainer to organize pot lids, or Tupperware lids in a cabinet. You can find them in all sizes now, to fit almost any cabinet, and they are super cheap at the dollar store!