All very good suggestions.
Always looking for methods to recycle, every time I filled the fridge with bottled drinking water I would think - these boxes (bottoms) are too good to toss. The make pretty good trays to hold quilt blocks as such, but here is another idea............
I use the cardboard box to set the hooped stabilizer in. Then I set a frame made from cardboard over it and spray. If any of the 505 should drift onto the hoop, I use DK5 to clean it up (seldom needed).
I have used this method for about two years, same box and frames.
I have also read that a large cereal box works just as well. Cut out one side the size needed for the hoop. I would cut for the largest and still use the frame method to make the opening smaller when needed.
No more cardboard boxes or plastic bottles to recycle - switched to PUR water filters and adult sippy cups. 