There is a plastic rivet kit available..I just bought the tool and rivets from Princess Auto here in Canada. I will get out to the shop in the morning and get the name of the manufacturer..I am sure they will be available in many places.
Current toys..
1986 Honda 350X..trail bomb!
1985 Honda 250SX..my main mudder
1985 Honda 250ES..Back in Black Trike
Current non-trike toys:
1990 Honda TRX300FW
1995 Seadoo GTX
1998 Polaris Indy Lite 340(Nearly new looking)
1998 Polaris Touring 500
1998 Club Car (electric)