the most "farmable" methods for these are doing trials and random dungeons on different characters
trial weekly quest boxes give 2 scraps with 0 cooldown, each character can get 1 of these per trial per week (theres about 10 trials, so if you cleared all of them on normal for the quest boxes, thats 20 scraps for each character each day)
random dungeons give scraps with the first completion per character (1 scrap for normal and 2 scraps for vet)
other methods of getting the scraps:
first end boss kill in trial per day per account (1 scrap on normal, 2 scraps on vet)
first master writ completed per account (1 scrap)
turning in scroll capture quests in cyrodiil (i think this awards 4, once per day per account)
getting emp in cyro is 25 scraps (though this seems unlikely unless you really work for it)
i have my main house (grand topal hideaway) listed in the housing tours, it has multiple target dummies, scribing altar, and grandmaster stations (in progress being filled out), as well as almost every antiquity furnishing on display to preview them
i have my main house (grand topal hideaway) listed in the housing tours, it has multiple target dummies, scribing altar, and grandmaster stations (in progress being filled out), as well as almost every antiquity furnishing on display to preview them