To summon a dc, I put my hand behind my back and wait for the dc to touch my hand. Most of the time, I only have to wait a second or two. If I'm trying to summon a specific DC, after the DC touches my hand, I like to ask if it is them in order to hear their voice to help with the expectation. If I don't feel a hand, I assume they are behind me somewhere.

For pocket sized objects, I reach into my pocket for them while assuming they are there.

For handheld objects, I blindly reach out to the side for the object while assuming that it is floating there for me to grab. Sometimes I need to reach out with two hands for larger handheld objects.

For a bigger object that isn't handheld, I feel for them behind me while assuming it is there. Sometimes I use my foot if the object is on the ground.

I hope this helps!