Something a bit specialised has been added to the toolbox recently - an Amaco T-3 double-ended embossing tool. I bet Iain Robinson is coveting it already.
For those who aren't nerdy about scribing tools, this is a well made device for drawing lines in soft surfaces such as the face of cardboard. At the end of the prongs sticking out of each end is a tiny ball. One end is larger than the other.
The wooden handle is comfortable to hold and it's easy to produce consistent depressions, not grooves as you would get with a knife, in the card. I quickly and cleanly marked up some brickwork. Yes, I know you can only see the horizontal lines in the picture, the verticals are there but white card marked in white is difficult to photograph.
4 quid for a blunt metal spike probably seems like an odd way to divest yourself of money to some. Not me, I anticipate marking out lots of paving slabs with this thing in the future.
Amaco T-3 tool came from Freestone Model Accessories.