Like many on here I follow the ‘Explaining Computers’ channel, but on Christopher Barnatt’s eponymous new channel he’s recently posted a simple way to make a project case from solvent-welded ABS plastic sheet.
This seems a very useful ‘lower tech’ way to make a case compared to 3D printing and interesting for makers in general. It could be particularly useful if you are making a custom ‘thing’ of your own design. :-)
As usual he explains all the steps in the process very well and the finished product looks good.