Related Clues:

• Increased excessively, with "on"
• Supplied in abundance
• Stacked (up)
• Stacked messily
• Did it to old CDs in bin
• Did it to old records in bin
• Like stones in a cairn
• Accumulated, with 'up'
• Amassed, with "up"
• In stacks
• Gathered in a pile
• Made a stack out of
• Like raked leaves, often
• Pennies I organised in a heap
• ___ up (in a heap)