I also bought the large and small suction cups. If you can't find them be sure to ask where they are. If I remember correctly they were with the bathroom shower area.
The blades are in the utility knife/carpet tools area. Last time I stocked up I got them for $1.49 for a package of two.
I also bought two of the stubby srewdrivers. Lots easier to hold on too.
Bought the magnetic pin holder for $2. I think its actually for screws and nuts and nails.
Don't forget to look at the gardening gloves - great for machine quilting. You could snip the tips off the thumb and pointer finger so you don't have to constantly remove them when dealing with the needle and thread.
We are fortunate to have a HF nearby. But, I have to wait until DH can go with me or he will pout. But, he does get a kick out of what I buy from there for my quilting.