Salam Mom2bee,
I am joining the conversation a bit late, but here is our experience so far:
We are raising our multilingual son using the same languages you are planning to teach.
As you are planning ahead, I am suggesting homeschooling resources that you may use with a 2y+ toddler:
For Arabic, if you/ your husband are fluent speakers, I recommend
http://www.noorart.net/idevaff/idevaffiliate.php?id=173, (it's an affiliate link

). It is full of wonderful resources. We are currently using these collections/ curricula:
-Scholastic Arabic Collection: I was crazy enough to buy this:
http://www.noorart.com/Scholastic-My-Arabic-Library-Stories-Set-of-208-Books (when it was on sale last December). It covers all the readers, picture books, non-fiction and chapter books for K-6. I LOVE it!
- El Amal Series for the Islamic education:
http://www.noorart.com/Al-Amal-Series-Islamic-Education-Set I am planning to introduce this series later on ISA:
http://www.noorart.com/school_section/Islamic-Knowledge-Series-- For the Arabic Language, I think this series is unbeatable:
http://www.noorart.com/school_section/ico_learn_arabic_arabic_curriculumI have been trying to translate the LR files to Arabic, but found that my son just prefers handwritten index card. We can flash them, play with them a la Montessori, etc.
We also use these flashcards cards recommended by Ayesha Nicole:
http://www.learningroots.com/new/index.php/shop/quran-learning?page=shop.product_details&flypage=flypage.tpl&product_id=42&category_id=15as well as other products from:
http://www.learningroots.com/new/For Spanish, we used YBCR Spanish with a great success last year and since then, we've been just reading books and watching Speekee, Whistlefritz, Little Pim... There is board book collection recommended by aangeles you may find here:
http://www.memima.com/ It covers the basic vocabulary and my son enjoys it a lot. He doesn't speak Spanish fluently though, as we don't practice it enough, but I think he is reading at a 1st grade level. I've never taught him Spanish phonics explicitly, but they are so easy to figure out!
Concerning LR, my son likes to watch the French and the Chinese lessons. I would love to get him the Spanish curricula hoping he would like it too. I am a LR fan, I it is the ONLY reading program I used during my baby's first year and that's how he learned to read. I would suggest you give a try with your baby, just in case you change your mind
