You will need a buckle of course, and probably 20/18 or 19/16 straps. Best to measure and have the watch store install them, unless you fancy scratches.
Here's my Snowflake on a black Seiko strap with curved ends to match

Automatic white titanium with IWC strap which happened to fit very nicely

Sport watch decked out for Christmas with red alligator
White hex-patterned dial with vintage diver strap
Have fun!

Cazalea