A CLC Pi filter is a Capacitor from power supply rail to ground, then an inductor in series with the power supply rail, then a capacitor from the power supply rail to ground. It makes a low-pass filter on the power supply rail, for current going in either direction. You can also just use an LC filter, with a series L and then a C to ground (i.e. a shunt C) on the downstream side of the L.
In practice, there will be an LC resonance, so a little resistance might be needed, either in series with the inductor or one or both of the capacitors.
If your maximum current is not too high, you will have a larger choice of inductors. Mouser.com has plenty to choose from, as do others.
You could probably try a 10 uH to 100 uH inductor, with something on the order of 1000 uF to ground after the inductor. But you will probably have to experiment.
If you know how an RC low-pass filter works, an LC is similar. They are both frequency-dependent voltage dividers.
If you don't work with filter equations every day, it's probably easiest to use a simulator like LT-Spice (free from linear.com), and run an AC Analysis.