Hmmmm Depends on sensitivity.
- Wartenberg (is that how you spell it?) wheel is great on feet if the person is good at staying still and you are going light and slow. My models hate this and we are doing games with it now
- Dental flosser is evil between the toes and tight soles
- feathers or soft silk between toes can occasionally be effective
- Ballpoint pen used LIGHTLY for pads of feet or soles
- brush don't go crazy with it or you will kill the lees feet. get a brush place it on your hand push it down and brush slowly. If it hurts get another brush. If it tingles you got the right one. Brushes are better used when you press and go slow. Causes the effect to sink in rather than hurt
- Comb. I am a little biased as I think this causes more pain so I go against it but it can work just don't use it in a saw motion
These are basic ones but never be afraid to grab and try anything really. Ice can help, massage machines, magic bullets blah blah depends on the lee