Evidence further shows that a Winnie the Pooh blanket, several iron-on letters and a toy horse were in the laundry bag that contained the slain 2-year-old, reports the Orlando Sentinel.
The remains were recovered by the Orange County Sheriff's department near Caylee's Orlando-area home on Dec. 11. FBI investigators also found residue that "appeared to be consistent with the adhesive side of a heart-shaped sticker," sheriff's Detective Yuri Melich is quoted as saying in the documents.
Documents also state that investigators seized sticker books and scrapbook material from Caylee's home, along with other toys that matched the one found with her body.
"It appears that the sticker was put on the duct tape intentionally," Melich is quoted as saying.
Caylee's mother Casey Anthony, 22, is being held in jail since being arrested Oct. 14 and charged with her daughter's murder, even though her daughter's remains had not yet been discovered.