I agree with the above users, ta'weedh are haraam.
I know that in South Asian culture, they are very commonly worn or put around the house. I used to wear them as a child but when growing up and after doing my research, I have stopped wearing it.
It is impermissible to wear amulets and the like with the intention that they are somehow going to protect you. Only Allah can protect you, not the amulet, and believing this is shirk.
If you want to protect yourself, you should read the morning and evening adhkar which were narrated by the Prophet:
`Uthman ibn `Affan (Allah be well-pleased with him) reported that the Messenger of Allah (Allah bless him and give him peace) said, “No slave of Allah says in the morning every day and the evening every night, ‘In the name of Allah by whose name nothing in the earth or the heaven can be harmed. He is the Hearing, the Knowing,’ three times without that ensuring that nothing will harm him.” [Abu Dawud; Tirmidhi]
بِسْمِ اللهِ الَّذِيْ لا يَضُرُّ مَعَ اسْمِهِ شَيْءٌ فِي الأَرْضِ وَلا فِي الْسَّمَاءِ وَهُوَ السَّمِيْعُ الْعَلِيْمُ
BismiLlahi’lladhi la yadurru ma’asmihi shay’un fi’l-ardi wa la fi’s-sama’i wa huwa’s-Sami’u’l-‘Alim
You should also read Surah Ikhlas, Surah Falaq and Surah Naas three times, as narrated in a hasan hadeeth:
Mu’adh bin Abdullah bin Khubaib, narrated from his father, who said:“We went out on a rainy and extremely dark night, looking for the Messenger of Allah, so that he could lead us in Salat.” He said: “So I met him and he said: ‘Speak’ but I did not say anything. Then he said: ‘Speak.’ But I did not say anything. He said: ‘Speak.’ So I said: ‘What should I say?’ He said: Say: “Say: He is Allah, the One” and Al-Mu’awwidhatain, when you reach evening, and when you reach morning, three times, they will suffice you against everything.’”