Harbor Freight has some great stuff... I had not even thought of using those for cleaning out my machine. I use a children's paint brush - and I have a hand held vacuum with tiny attachments to suck out the fuzz...
My last trip to HF was a nice one... I left with a wheeled utility cart for taking my machine and bags of stuff to and from the car when I go to my sewing groups... for $33 I am now able to make one trip instead of two or three! I love my cart