Small as in 55 x 70cm

There isn't going to be much in the way of track,just a basic oval of track with points that can be switched to make it a circle and a couple of sidings.
I don't think I am going to do much scenery as he isn't very mobile with his hands and I think tress and lights will just get knocked over all the time

I am intending to fit point motors so he hasn't got to fiddle with the points as they are quite small in N gauge.
It is going to be built with Peco set track that I have already ordered from Hattons,I have just been out to work this morning and got some scrap chipboard to make the base with so the only expense to build the base has been £2.19 for some wood screws

This is the track plan.
Basic like I said.
Might have an engine shed on the left hand side if there is room and a coal bunker and water tower on the right,we will see.
Will start on the baseboard later.