The best replacement for buckle is cobbler.

The best alternatives to buckle are rated as following:
★★★★★  cobbler
★★  clasp
★★  velcro grips
★  deployant
★  greenstick fracture
★  vitrectomy
★  lever belt
★  american eagle
★  pacsun
★  deployment
★  crumble
  pneumatic retinopexy
  invisible double locking clasp
  buckle

Your alternative for buckle is not listed? Suggest!
Speaking about buckle, one probably shouldn't forget about belt.

Other search terms related to buckle and their ratings are:
★★★★★ belt
★★★★ prong
★★★★ leather strap
★★ chain belt
You have in mind a companion for buckle and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of buckle in all years. Click on graph for more.
buckle
cobbler
clasp