A good seam ripper(get a few as they are so tiny they are easy to lose), a 1/4 inch foot and walking foot if your machine didn't come with one, a good pair of scissors I like gingher and karen kay buckley scissors, kai is also popular, thread snips or tiny scissors. Rotary cutters I still love olfa. Pins and clover wonderclips are the best. Hand sewing needles for binding, I really like roxannes as they really glide through the fabric. I like the clover brand pins as well. Other than that you can add items as you go. A basic 6x24 and 6x12 ruler are good starter rulers. If you like the look of strip quilts a june tailor shape cut plus is also a good basic ruler for quilters. Mats just get a decent size one. A 24x24 is the smallest I usually work with at home other than my travel mat.