what do i do for my dogs 16th birthday??

hi everyone!

this is my dog, Psycho. I’m celebrating his birthday tomorrow but was wondering what activity/ies we should do for him.

Here’s what I have so far:
• birthday bandana
• steak for dinner
• homemade cake (dog friendly ofc)
• “sniffari”
• treat scavenger hunt (maybe. if i can find an easily digestible treat option)

It’s hard to think of things that will cater to every one of his needs. He can only have foods that are easily digestible, he’s a very anxious pup so going on car rides is something i’d prefer to keep limited, and although he still has a good amount of energy, his joints cause some pain which results in him panting a lot.

any ideas or suggestions would be greatly appreciated. thanks! :)