Sticky Wicket

"Now look here Clive, what's the sticky wicket on the Sackbots?"Sticky Wicket Is A Monitor As Eyes On Sackbots In LittleBigPlanet 2 Story, They Can Display Hearts, Exclamation Marks, Purple, Yellow And Blue Circles

The Factory of a Better Tomorrow
These First Appeared In The Sad Song Of Clive Handforth And At The Beggening They Showed Purple But In Maximum Security There Are Ones With Exclamation Marks And Then In Pipe Dreams They Finally Show Hearts Instead Of Exclamation Marks.

The Cosmos
In Into The Heart Of The Negativitron They Show Up Again In The First Cutscene But With Blue Circles

LittleBigPlanet 2: Move Pack: Rise of the Cakeling
In Sackbot Valley, There Are New Types Of Sackbots With Blue Circles As Their Eyes, Just Like In The Cosmos.