There's a gadget called the "purple thang" that is akin to a stilleto. It's plastic so it won't hurt your machine when trying to catch the bobbin thread, guide fabric, etc.
Everyone else's suggestions are great so can't add more for notions. But, (isn't there always a "but" :-) )one of hte handiest things I have is a tool holder from Joann's. It's canvas, about 6" x 8" x 8" tall, and has lots of pockets. I keep it right nesxt to the machine so I can easily grab those tweezers, screw driver, little brush, etc.