Is this the 'flexible' type or 'fixed' type of toe issue?
I looked for specifics and they don't seem to be in super-abundance on the distinctions and when the situation becomes one for surgical necessity.
One of these sites has a chart for hand 'manipulation' stretching gently at first [VERY gently I'm assuming] that seems promising...
If you can at all, try the toe/marble/pick-up thing. After 7 weeks off both feet [mostly] I had a zero toe strength...All I could do was smush the marbles inbetween my toes and the work out was getting the toes spread and flexible enuf to let them go...after two weeks it was amazing how a little practice helped my toe, foot, ankle and leg strength.
I would start off gently tho, 10 marbles one set of pick them up and get them in a dish x3 and work your way to do more 'sets'. Do NOT try to do a lot all at once...the pay-backs are worse than the initial problem!
http://orthoinfo.aaos.org/booklet/vi...pcategory=Foot
http://www.med.umich.edu/1libr/sma/sma_brkntoes_rex.htm
Hope this helps start to get you 'flexing'! - j