question for truckster

you seem to be on a thing about shoes laces lately so im quite sure you will know how to help me out of this conundrem we had last weekend so it will never happen again to us or any one else.
when we were camping at the otways last weekend the worst thing that could happen to a four year old happened.
diamond had brang her 4 pairs of shoes to go camping with but 1 pair got wet.
the second pair were not suitable for the type of driving we were going to be doing.
the third pair was only half a pair as one was lost.
ps all socks were still in pairs.
now that left our darling daughter with only one suitable pair of shoes
dear darling dad she says can you please do my shoe laces up for me please.
of course i can sweet heart come over here.
now the trouble begins i snap one.
question is i tried to repair it by tying it together but i coouldnt get it through the little holes to tie up.
what would you recomend to (1)repair the shoelace so it will fit through the little holes.
(2)what else could be used when away 4wding for the weekend as a substitute for a shoe lace.
this is a real story and we have witnesses to prove if we are not believed.
any help really appreciated
thanks for your time and effort.
cheers mate