Here is what a use of the cut up technique may look like. Lets start with one text as our source material. There can be multiple source materials, but for this instance, I'll use some notes I wrote about an island on a small lake. This text can then be fed into something that introduces some randomness. For instance, lets use Virtual Brion Gysin. Output of this randomization may look like the following.
the shore shallow. massive are the is tire, at bear logs very pictures some area. Ive In and shallow, may to think no imagine on least cans Omaha. best. than is this time on I in I the near through This are and This in on on much flooded. areas this island water. The of boats seems area fact. the beer mostly. time. shells side. deeper west some recently lake been these have to lots lake It by lake itself a The south too this by with things, are appears the clearing or deep. places trees, Shotgun around fallen to area and age is get it many trees This been the and with There like rest island have difficult. old most so entire five sporadically several is get Standing There be water far of difficult the island. area fairly Getting lake. the Deeper for this swampy. There on get houses. mostly make Its an bay not be be largest I surrounded of may small seems doesnt logs people feet island in north overgrown of more may part docks, four of it. to of it more to meaning is some this There sampled, the Based down
This data can then be mined for interesting word combinations and ideas. For instance, in the above text, here are some fragments and thoughts I picked out with some minor modifications.
The shore shallow.
Massive is the tire at the bear logs in this picture area.
Ive been in this shallow, imagining Omaha as best I can.
In and on this flooded island of water. With boats as an area fact.
Beer. Time. Shells. Deeper west; the south too.
Tree places, shotgunning around fallen in this area with age. Many trees.
Deeper for this swamp. Island in the northern overgrow.
This alone creates something that might be interesting to read. And because it uses words from our source material, it might strangely reflect the source material in some way. However, one doesn't need to go full beatnik to use this to enhance their writing. Some of this material can be, for instance, inserted back into the source material. The level at which this randomized material is blended with the source material can have interesting effects.