I am not keen myself as regards to the showing aspect and the cats travelling -mine would absolutely hate it anyway.
2 don''t like going in the car or the cat basket at all and none are keen on being picked up very much either.
I ask, as i have a stall at a few shows throughout the year (locally usually and this is just up the road from me ), i have been selling diamonte t-shirts and designs that go on all sorts of clothing -just iron on.( got the last to sell this year now -not sure if i will be getting any more ) and show cards ( and any other bits i have been able to get hold of ).
I use the money to pay for the vet bills ( over £450 this year up to now !!!) and i always try and give to a rescue as well - depends on which one -i have mainly given to Chapelhouse and one called St Francis -not the other persian one , but same name one that looks after cats that can''t be re-homed due to various illness and other reasons.