The 'Silly Wand' comes with loads of gags and is very funny in practice
- such a simple item but loads of laughs.
http://kidshowmagic.co.uk/product_info.php/cPath/4/products_id/15
Silver Sceptre is available from Practical Magic and is an absolute
winner.
You could even replace sponge balls with 'clown nose' productions,
similar to Bill Abbott's 'Sponge Snack' routine - that is really funny
too.
http://kidshowmagic.co.uk/product_info.php/cPath/14/products_id/77
All of these are really easy to perform with a full emphasis on the
clowning and fun rather than the 'magic'.
Hope that helps,
Carlo