The actor tweeted fans after a recent episode in which couples Blaine and Kurt and Rachel and Finn split up, singing a rendition of 'Don't Speak' by No Doubt.
Criss linked fans to an auction of tissue boxes signed by himself, Lea Michele, Cory Monteith and Chris Colfer.
According to Entertainment Weekly, the boxes from each couple have exceed $1,000 (£619), with the box signed by Monteith currently up to $2,000 (£1,250).
Other members of the cast including Naya Rivera and Heather Morris are also auctioning off items for charity.
The auction, which is raising money for The Trevor Project and Ovarian Cancer Research Fund, ends on Friday (October 12).