Ideas for a privilege please

[yawningmonster]

Not sure where to post this so put into parenting for want of a good place.

DS is about to turn 9, every year he earns a new privilege and gains a new responsibility. He has chosen to cook a meal a month as his responsibility (he has multiple disabilities so this is actually quite a responsibility and will require much adult input at first) but we need a privilege. The only one I can think of is that he gets a dollar more a week in pocket money. He is not really a candidate for going to park on his own, he already walks home from school with other friends, not keen on a later bed time as it is 8 o'clock with lights out at 8.30 which is quite late enough in my opinion....
HELP need ideas please

Outing of his choice once a month?

Getting to choose the meal every so often?

Joining a new club, swimming/scouts etc? Or getting a kids bank account you pay into? (maybe too young) Or letting him have final say on non-school clothes choice?

Nice idea by the way. What have you done in previous years if you don't mind me asking and stealing your idea?

What about an extra half hour / or hour onto bedtime just at the weekend?

Or a monthly trip to the cinema?

Fantastic idea!!!

This is a great idea, what about later bed time at weekends?

One on one time with you to do something he chooses without siblings (if any)?

A bowling/cinema/swimming/park/zoo trip once a month?

Oh went off line for a bit and look at all these lovely replys...
Bluestocking...quite like that idea will float it by DH
Yoni...he will get to choose (within reason) the meal that he cooks so might feel a bit cheated if his privilege and responsibility were combined
Barberry...other privileges have been....pocket money, increased bedtimes, walking home with his mates, having night outings with one parent (eg going for icecream sundae after tea, going to observatory with dh etc), and one of the huge ones for him and us was being allowed to have scissors in his room...sounds odd but he is a bit of a snipperer and it took us till age 7 after a long time of begging to allow the scissors to be in there for the millions of paper crafts he likes to engage in, before 7 it could easily have been curtain craft, sheet craft etc (our 4 year old seriously covets this privilege over any of the others and can't wait for her own scissor privilege...we are a truly odd family I fear.
Annaban...weekend bedtime quite good he is a bit black and white so not sure if we could work this or not will float by DH
Forty like the one on one idea
I could of course do a glue in the room privilege...not sure I can take the stress though...scissors still give me minor conniptions despite him being really good with them so far.