There are many protocols you can use for recovery.
Some depends on what you are recovering from.
Daily training day i.e. post workout cool down
competition/racing
training: strength work, metcon, cardio based workout

Adaptation Error: No Cool Down | Community Episode
Community MWod Video: Linda Miller of VES Sports – Compression & Recovery

Estim to flush an area using Marc Pro or Marc Pro Plus.
There are placements to address most areas all over the body.
The goal of post wod recovery is the
normalization of tissue through the movement of nourishment and waste.

IASTM is used to address multiple aspects of recovery. A coach, athlete, or practitioner can use HawkGrips as a tool for IASTM. HawkGrips are used to address soft tissue irregularities to improve range of motion and /or relieve pain.

Cryotherapy is an a viable option if there is a facility in your area.

A combination of recovery protocols can be used to address different aspects of a situation.
Pairing mobility and movement with estim and/or IASTM has solid results.

An active recovery day the activity selected needs to be restorative for
that person. Its a great opportunity to work on a skill. The effort used
should leave the person feeling energized not depleted.
One example
is a 15-20 minutes at 60-70% effort run, swim, airdyne or a 2K row. The pace is
slower and conversational with a focus on efficient movement patterns.