Big bar spacing!

[hamster_love_16]

Hi,
I have a dwarf hamster and just got a Zoozone 1 cage last week. I was just looking at the bars on top of the cage and seeing how large the spacing is. I am not too worried as the bars are quite high up and she's very small, but I know they are very crafty escape artists. I was just wondering, what supplies do you need to mesh the bars, and how would I do that? Thanks.