Printable robots are possible

Printable robots using inkjet technology, conductive polymers and origami are forecast. This seems like something that would have some niche applications for industry,hobbyists and some business applications.

Printable batteries: Power Paper is an inkjet printed dry-cell type battery that can generate 1.5 volts.

Printable radio frequency identification system (RFID) tags are currently used on paperboard and carton packaging could be used for communications.

Printable displays using OLED (PLED)

List of the Leading EAP Materials for printable muscles

Electronic EAPs (electro-actuated polymers)
Dielectric Elastomer EAP (DEA)
Electrostrictive Graft Elastomers
Electrostrictive Paper
Electro-Viscoelastic Elastomers
Ferroelectric Polymers
Liquid Crystal Elastomers (LCE)

Ionic EAPs
Carbon Nanotubes (CNT)
Conductive Polymers (CP)
ElectroRheological Fluids (ERF)
Ionic Polymer Gels (IPG)
Ionic Polymer Metallic Composite

Related info:
This could be a way to extend fab labs.