What are /r/inmatetoroommate's favorite Products & Services?

From 3.5 billion Reddit comments

I happened to catch Bills live stream one of 19 whole viewers. He mentioned that he did not send Sharna a book she bought it and left a verified review lol. This reviewer is listed from Elkhart, IN has to be her. Book: https://www.amazon.com/gp/product/B0B4TY9RNT/ref=dbs\_a\_def\_rwt\_hsch\_vapi\_tkin\_p1\_i0