Lifebelts aren't worth repairing Ned - They are only a few pence to buy from any decent model shop, and come in a range of sizes.
For a funnel, you can take any suitable piece of plastic tube, cut it to length and paint it - Or if you can't find a suitable size, roll your own from a sheet of styrene, aluminium, or even plywood...
As for floodlights, thats a bit more difficult, but basically it's just a series of tubes, so there's nothing that should be beyond you or your Dads abilities - By the way, what is Dads name? It seems silly to keep referring to him as "Dad"
