I would go to The Range and buy a selection of their Hays. I know what you might be thinking but rabbits are grazing animals and for them to be munching on hay is very fulfilling. Of course, if rabbits have access to grass, then this is even better. Next to hay/grass a friend is highly beneficial - I know you had a friend and one day will hopefully find another.
Wicker balls, Dilly does love slinging them around.
Just one? Argh! A stool, so they can hide under it or be king of the castle on it!
One big thing would be their donut tunnel because they love it and it's so versatile you can switch it up week to week.
One or two small things would be rosewood's ball trio and a treat ball to dispense their pellets from.
Seconded! Being confident and asking nicely at the local roadworks, housebuilding places also works be prepared to take it there and then though! Many times I've carried a filthy piece of pipe home in work clothes :lol:Ah yeah, it wouldn't stand up so well outside - none of my cat or rabbit tunnels ever did. For outside I'd highly recommend twinwall piping! If you put out a wanted on a local facebook site you may find someone willing to give you offcuts for free - that's how I got mine