I'm pretty sure I'm getting myself into a complete pickle over this but ideas/advice greatly received!
DT's are nearly 10 and I definitely think this is the last year of the big FC... so want to make it special. So, I've got them some very cool stunt scooters as their main present that they really want and know they will love.
My lovely parents are also buying the boys very cool new mountain bikes (their current ones far too small!) that they have no idea they are getting and a complete surprise, which they will also love! 
Problem is that my parents live abroad so I'm having to get the bikes a hide them (somehow!) before the big day. The local bike shop can keep them until Christmas Eve and I'm not sure whether to give the bikes to the DT's then or wait until Christmas Morning... If I do that how on earth do I present it all on the morning as I want everything to be an amazing surprise but also don't want anything overshadowed or it all to be too much.
So then lovely fellow festive mumsnetters how do I do I present the ermm presents (we have no room for both bikes, scooters and other presents in the house at the same time btw)
Thanks!