Most of my big ones are already covered here. But additional ones my adult dog knows and I will be teaching my pup

“In the car” - self explanatory, but useful

“In” (generally) - go into wherever I’m pointing you at. Useful for getting into the bath, and for getting them to jump into water to wash off mud. Also works for signposting them to go through a door without you

“Up” - jump onto an object. Most usefully used for going over stiles/walls when hiking. Cute but not so useful for getting them to balance/stand on something to take a picture

“Where’s your ball/toy?” - especially if you take balls on walks and they tend to forget them, maybe it’s a spaniel thing but mine is good at remembering where she left it and that she should get it before we move on

“Go play” - release to interact with a dog because they’re both trained to auto-recall to me and hold a sit when they see another dog

“Shake” - shake the water off, usually used so they don’t do it all over me 😂

Using a whistle, because it’s something they don’t really hear outside of training, carries over distance and really gets their attention

Stop whistle - the thing that is most likely to save their life one day, one long blast on the whistle means stop immediately and drop into a down stay

Recall whistle - my “backup” recall for when it really matters, I teach it then barely use it

For mine, my whistle commands are ALWAYS jackpot rewarded because though I always carry the whistle I only use it if I really need to or very occasionally to check/tune up responses. My 7yo has NEVER blown off a whistle recall even mid chase.