One project I backed on Kickstarter last year was; Tabletop terrain from XPS foam: Buildings. This is a book detailing the construction of buildings from, yeah you guessed it, XPS foam. I’ve been looking at upping my game on terrain modelling and this book might just help. Laser cutting is good for some things, but you just can’t do curves and organic shapes. But a mixture of both should be the killer combination.
Looking at the images online pecils and pens have been used to form some of the detailing. Being the horder that I am I have loads of bits of metal lying around underemployed. A bit of cutting, a bit of cutting, some dowel rod, a bit of two part epoxy glue and a splash of paint I ended up with these.
Four different sized scribing tools. Slightly wonky (technical term) as I didn’t drill quite perpendicular to the dowel.
Here is a link to the book which will describe it far more eloquently than I could.
Tabletop terrain from XPS foam: Buildings
If this tempts you there still is the option to be a late backer.