Farm share, late season 2 of 4

[magid]

• three large heads of radicchio
  
• nine yellow onions (eight small, one tiny)
  
• eleven carrots (many of unusual size; seems around 5 lb or so)
  
• two smallish butternut squash
  
• a small bag of arugula
  
• a quart of mixed radishes (mostly round red, some long red "breakfast" ones, a couple of watermelon radishes, and what look like some small purple starburst daikon)
  
• three large rutabagas
  
• two medium sweet potatoes
  
• seven Cortland apples (Apex Orchard)

First thoughts: mashed rutabagas; arugula wilted in a dish with barley or rice; fridge pickled radishes; pickled carrots; maybe baking slices of butternut squash with onions and herbs. No clue what to do with that much radicchio; any suggestions?