That brickwork is "Faller" # 222559 ( intended for N scale, but actually just right for TT )
Brickwork - you can make it by gouging Bristol-Board like I did below.
The dimensions are exact for TT scale -2.1 x 0.9 mm and a 0.1 mm mortar layer.
But this is only for rather small detailed areas IMHO.
Honestly, the plotter wouldn't mind- it just takes some time to finish.
That particular specimen was made on a Portrait.
I used it to simulate old, partially crumbling work.
The three-dimensional surface comes out when you rub off the fuzz left from gouging with an abrasive sponge.
Another structure is in the line -but that 9.5" garden RR is taking all my time at the moment.
I have to pour concrete foundations for a segment- turntable plus shed.
Then there's the passenger car waiting to be built, those FX4's need attention, and of course, the daily chores.
Have to include the nights as 24 hrs per day seemingly don't suffice.
Just by incident ( needed to cut a replacement gasket for my FX4 Taxi )
I found out that Abil/Elring gasket paper ( 0.25 & 0.5mm ) or other make
are the best-suited materials for those fine structures like window frames, or a row of tiny holes.
The grain structure is such that any fine detail will be cut out without fuzz, and the paper is soft enough to accommodate single cuts.