Help needed with dressing-up ideas for book week

[purplehighheels]

My ds(6) needs to dress-up on friday in the theme of 'safari', and i'm afraid i have no idea what to put him in!
I have been unwell for the past week, so haven't been able to browse around the shops for something appropriate (and cheap!), and I haven't got much time now, so any ideas would be really great.
Thanks x

face paint a lion or tiger and dress in brown
maybe?

Cover a dressing-up hat/helmet with brown paper to make a safari helmet. Brown clothes. Toy binoculars around neck.

Or downloadable animal masks here - www.scholastic.ie/bookfairs/theme_safari.html

Thank you both so much for the great ideas, I'll give them a try and see how they look.