[pilleya]

Any reason you can't just put your tools and other smaller parts into suitcases? You just need to make sure that your cordless tool batteries go into your hand luggage.

I really think that if your tool crate is weighing 400lbs that your bringing way more tools then you need, or more than other teams will likely need. Try to really analyse what tools you actually need to fix failure modes on your robot. Chances are if you not using any 3/4inch nuts that you won't need a 3/4inch spanner etc.