You know you throw away those valve stem nuts, but if you’re running a front derailleur band clamp, it might be worth hanging onto a couple of them. We found them to be the perfect size for spring a bottle cage off the frame, allowing it to sit over the band when it ran between the cage bolt holes on a frame…
While some cages are raised slightly, others (like the Lezyne cage shown in top photo) have flat bases that leave no room for anything underneath. This solution costs nothing, adds virtually no weight, and uses parts you almost slcertainly have laying around. Problem solved, now go ride!