give variety to something
add variety to something
bring variety to something

There are opportunities to add variety to the other sessions.

Adding variety to a fitness program is a good way to keep motivated.

Ski areas usually have several activities to add variety to just going up and down hills.

Look out for different bread types to add variety and taste.

For now, he was content to add flavor and variety to their meals.

They add further variety in form and color to my arrangements.

The inclusion of dances for men would have added variety.

Tours by Russian and foreign artistic companies add variety to the region's cultural life.

Using an exercise ball can be a challenging way to add variety and fun to your workout.

Two other compositions added variety to the program and made the evening even more impressive.