I use a steel can strainer, less then £5, fits V60 02, Kalita Wave 185 & small Clever Dripper.
It doesn’t need holding in place, so is hands free.
For all but the Kalita Wave, I start off pouring directly on the bed for the first third of brew water, then via the strainer (all via the strainer for the Wave). This means for V60 02 you have to balance the strainer on your scales/brewer so your weights aren’t thrown off when you add it to the process.
There is also the Hario Drip Assist 02 as an alternative, this can stay on the brewer throughout, as it has 2 pour rates depending on the centre or the outer ring being used. Again, also fits Kalita Wave 185 & small Clever Dripper.