According to Jim (2001)

S3E25 Trashed

Cheryl, a chronic hoarder, persuades Jim to secure a storage space for seven years' worth of their children's artistic creations. However, Jim declines to cover the rental costs and decides to discard all the artwork, believing Cheryl won’t realize it’s gone. Trouble arises when she suddenly requires some of those creations for a surprise retirement celebration for Ruby’s beloved art teacher, leaving Jim in a panic over the missing items.