What are the best tips for circuit practice with strong crosswind?
Try visualizing the pattern.  

In your mind's eye, overlay the airspace around the airport with the track that you want your flight to take, visualizing all sections of the traffic pattern from your point of view as you fly.  Now check to see if there are visual references on the ground eg buildings, roads, parks, golf courses, etc. which align with this pattern you are visualizing and use them as additional aid for pattern legs and turn points.  If the airplane drifts off this track, adjust your crab angle and/or your rate of turn in order to track correctly.  

As mentioned above, ground reference maneuvers such as rectangular patterns, turns about a point, S-turns etc are very useful and may be good basic practice for training yourself to visualize the pattern in space.