I love when books address the practice of making offerings, but even more so if they go into detail about offering in the context of making reparations to beings that you may have accidentally/unknowingly offended. It's easy enough to make a casual mistake on a personal level (the classic story of stepping on a stone that is sacred to a particular spirit/is their spirit-house and then consequently twisting your ankle later comes to mind) and nowadays with pollution being so abundant it's not uncommon to encounter spirits that are automatically hostile towards humans, even in parks. Sometimes you get that distinctive "back off" sensation just walking through an area that's recently been leveled and gone under development for the construction of a new apartment complex or mall. I've entered some forests before that had polluted rivers filled with litter and the local spirits were immediately tense and aggravated. It was only after I organized a neighbourhood cleanup project that I could work within the grove safely and with the blessing of the spirits.
One of the things I really liked about Jason Miller's The Sorcerer's Secrets and Protection & Reversal Magick (as well as his teachings in general) is his emphasis on offerings; it continuously comes back in all his writings and the methods he gives are sincerely useful. Reparations, and being hexed as a result of offending spirits in ignorance, are covered in good length as those kinds of hexes are some of the most common—often when people come to me for uncrossings or purification, divination reveals that the source of their problem is that and not that some other witch went out of their way to curse them as they originally worried might be the case.
Honestly when it comes to hexes in general (when it is an actual hex and not just paranoia) 98% of the time the symptoms are coming from the simplest, most immediate source. If it's not an external spirit that got rubbed the wrong way, the problem usually comes from the person's own living space (especially if they're a magician). Working altars can be like massive triangles of art for their keepers; whatever goes on eventually gets manifested. Dust or lint clogs the magician and makes them drowsy even when they're far away from home. If something on the altar is handled in rage or misery and not cleansed afterwards those feelings can easily multiply. There's a big difference in using your knife in rage while stabbing a poppet in a ritual context and roughly picking your chalice up to clean it while you're fuming about what someone else said to you. These are examples of some of the most recent things I had to help some fellow witches with.
It's something I literally had to do today for a friend who suddenly had a serious case of "everything I touch falls apart", especially concerning technology (nonstop glitches, malfunctions, frying, and so on). The source came right from literally the most important and sacred amulet on their working altar. As soon as it was cleansed (and, in a way, apologized to as it did contain a fetch of its own) everything went back to normal immediately. Using divination to ascertain problem areas or objects in one's home, checking up with your spirits, and of course being alerted by them of any issues beforehand are all good tactics for staying on top of the situation if there's a suspicion that something like this is happening.