Just going with the concept that technomancers are a different form of magic.

Resonance cable, looks like a data cable with only one end. The Technomancer can have the cable touching skin and plug the cable into a receptacle for a physical connection.

Resonance band, a head band that helps the Technomancer resist fading.

Resonance cloak, a cloak that renders the Technomancer invisible in AR or VR (as long as they are not in VR themselves) based off of the one emergent critter power (Can not find my book right now. )

Being able to create a familiar type sprite?

Now I don't think these are the best for most campaigns but it could be interesting.

In truth just was something to think about.