My youngest wasn't getting on with stabilisers on her bike and didn't want them taken off, so i stripped down an old bike from the garage (took off pedals, chain, cranks and chainring) and she used that for balancing on. Within the day, she was off, and moved on to her own bike again without stabilisers.
My back was broken, but well worth it!
She now loves cycling more than Barbie! Well almost.