Why not try using one of the battery driven bobbin winders they have on the market these days. I bought mine at JoAnns (or was it Hancocks?) in either case, I had a 50% off coupon and it was only $12.50. Note: these are not worth buying at the full price of $25.00.
If you belong to 'freecycle', you can always see if anyone has one to give to you for free.
Other than that, I agree with everyone else, wind your bobbin more slowly and use a metal bobbin. I once had a plastic bobbin burst open when I filled it too fast and too full. It was rather shocking to see the top of the bobbin shoot up in the air and all the thread pop off like a big coiled slinky toy. :shock: :?