I sometimes have a software I would like to recommend which has (or may not) have a relation to the 3D work and I always fear I will get kicked in the arse for doing it in the "wrong room"

Why not create a special room for that purpose ?

and talking about a recommended software :

Texture Maker

it creates AWESOME seamless textures and requires some learning and practicing but worths the 69 U$ it costs

BTW my Favourite software page is here:
Nir's Favourite Software Page


Nir