Use iron-on hem tape
Use fabric glue
Use fusible webbing
Use hemming strips with adhesive backing
Use safety pins for a temporary hem
Use fabric clips for a temporary hem
Use double-sided clothing tape for a temporary fix
Fold the pant leg to the desired length
Press the fold with an iron
Secure the hem with the chosen no-sew method
Trim excess fabric if needed
Check the hem after washing or wearing