i'm up for t-shirts and racing shirts. I got one last time, it might need to be a little bigger this time though, been that long i've put on a few k's.
Heres a few suggestions i would definitely consider:
T-shirts
racing shirts
racing hats (i wouldnt be interested in caps that are just green & have kawa written on them, make them like proper racing ones, sponsor logos, lots of writing on them)
racing garage banner (for my mancave)
large Kawa garage floor mat
kawa motorbike cover
theres a few for you.