Hiya, the overiding message with a book of this title is the need to be treated equally. Not to be singled out even in a seemingly positive way by labelling disability as 'special - it is instead just part of daily life.
Your table resources sound great could you use a 'where did they come from' map to link it to outside? maybe have collection bowls with an image of the environment - woodland for the fir cones, beach for the shells, haberdashery shop for fabric & wax you could take along a beeswax theme or parafin:
wax from wikipedia - if you want to extend the activity possibly place the bowls in locations for the children to travel to and deposit each item in - beach pot in the sand tray area, can you place a pot outdoors for trees? fabric shop in a home or role play area and wax/candle pot placed with an adult maybe that can help discussions introducing/reinforcing how care needs to be taken with flames.
Collage could be in an outline of the word 'me' - group or individual sheets?
Hope you enjoy it
xx