Help me with lungeing gadgets!

[forelegs]

Currently I lunge my horse once or twice a week (usually when I don't have enough time to ride) but at the moment I just lunge him in a headcollar or bridle and thats it. Whilst it gets him exercised, I don't feel like its really building any muscle, so Im looking for something that will make him work rounder when he's lunged.
Any thoughts or suggestions would be great.

 

[AmyMay]

Saddle/roller and side reins?

 

[BobbyMondeo]

I just use side reins and a roller

 

[swampdonkey]

side reins and roller for me too, keep it simple

 

[lizness]

I use two reins, seems to work better than side reins, pessoa etc. Inside one from bit, outside one through roller round bum under tail (well sits above hocks kind of). But watch your horse doesn't take fright at rope.

 

[Goldenstar]

I use all sorts of things for lunging it really depends on the horse and what it most needs to work on .

 

[paulineh]

I lunge all mine in an "Equiami" lunging aid . Works them correctly and well