Given the name Easton, here are some sibling name suggestions, categorized for different preferences:

For Sibling Names that Sound Similar/Have a Similar Feel:

• Masculine & Strong: Weston, Preston, Declan, Hudson, Harrison, Clayton, Colton, Jett, Rhett
• Masculine & Softer: Ethan, Owen, Caleb, Elias, Grayson, Asher, Silas

For Sibling Names that Offer Contrast:

• Masculine & Classic: Arthur, Henry, Charles, William, George, Frederick, Theodore
• Masculine & Modern: Jasper, Arlo, Milo, Felix, Leo, Finn, Ezra
• Feminine & Classic: Eleanor, Clara, Audrey, Grace, Charlotte, Victoria, Margaret
• Feminine & Modern: Willow, Hazel, Iris, Luna, Aurora, Harper, Evelyn

For Sibling Names with Thematic Connections (Nature-Inspired):

• Masculine: River, Brooks, Forrest, Stone, Hunter
• Feminine: Willow, River, Skye, Autumn, Summer

For Sibling Names Based on Initial Letter:

• Starting with E: Elias, Emmett, Edward, Eleanor, Ella
• Starting with A: Andrew, Adrian, Alexander, Amelia, Ava

Considering Nicknames:

• Easton can be shortened to "East," which could influence the choice of a sibling name with a similar short form or a complementary feel.

This list provides a diverse range of options. The best choice will depend on your personal preferences and the overall sound and feel you desire for your children's names. Consider saying the names aloud together to see how they flow.