I spent a small fortune on various 'leakproof' drinks bottles for ds to take to nursery, all of which have leaked! 
The only thing I have found to work is to use a shop bought drinks bottle (the ones with the lid that you pull up) . Currently using a Fruit Shoot yes Fruit Shoot bottle as its the only size I can get in his lunchbox!
Its driving me mad as stupid dh keeps throwing away the bottles waiting to be washed up.
Please recommend a leak proof bottle that is in fact leak proof! Links would be very much apprieciated!
Would like to add that I use a see through FS bottle, just so everyone can see that it is, in fact, not FS juice! Not that I'm a snob or anything 