Mudguards

Mechano ...? No idea if it would be stiff enough though?

Alu tubing

Hammer a star nut into the bottom of the steer tube, then use a stack of washers/wine corks/whatever else you have laying around over a long m6 stainless bolt or length of all thread with a nyloc nut on the end to space the mudguard to perfection?

Of course the proper answer is daruma, take a standard eye bolt and diy if you're too cheap or can't find one that is long enough.

Anyone got a recommendation for a superbodge alternative to a fender flute?

A cut down wald basket stay works perfectly

I had a machine shop make me a little plug for the bottom of my steerer with a threaded hole and then cut it to size myself. Can't remember if it was particularly cheaper but I bought the materials from eBay (nylon rod) so it wasn't much more.