Advice - carry water bottle and side stand plate?

[4 Paws_imp]

Thanks folks, some interesting suggestions. Had a cup holder on my previous bike, and on my Ural, which has spoiled me. With a modular helmet I can take a swig of water any time I feel like it.
CB's handlebars too narrow for cup holder and my GPS mount to co-exist.

Small plate is to keep side stand from sinking in asphalt lots, hot summers here in NC. Excellent suggestion as to storing under seat! So obvious I would have gone several years before thinking of it.

Had a small bag on the seat of my GS for years, was hoping to avoid that on this bike. Like the lanyard idea. Have tank bags but prefer to use them when I want to load up with "stuff" for a full days ride.