The older kid class (4.5ish and up) learns drum beats and melodies on the keyboard.
You will need 4 not too big drumsticks (7a adult sticks can work also, but anything bigger might break the cymbals we use):
https://www.amazon.com/Vic-Firth-KIDS-Kidsticks/dp/B000N3ZK36/ref=asc_df_B000N3ZK36/?tag=hyprod-20&linkCode=df0&hvadid=312155614707&hvpos=&hvnetw=g&hvrand=4325520931056810950&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=1013585&hvtargid=pla-434866772374&th=1
Any drum will do, as long as it's not too loud. I have some good used drums to for $20, let me know if I should bring.
This one is solid:
If you really want to go for it, this is the drum set I recommend (You could bring the just the snare drum to class, or the whole drum set if you like.):
https://www.musiciansfriend.com/drums-percussion/rogue-lil-kicker-3-piece-junior-drum-set?rNtt=junior%20drum%20set&index=1
For Keyboards, melodicas are great fun, extremely portable and rather affordable. This one has 2 mouthpiece kits:
And/or a keyboard if you can and don't mind bringing...
https://www.guitarcenter.com/Yamaha/PSR-E373-61-Key-Portable-Keyboard.gc
The older class needs:
1 drum
4 drumsticks (I have for 7 per pair)
1 melodica or keyboard: For Keyboards, melodicas are great fun, extremely portable and rather affordable, this one has 2 mouthpiece kits:
1 blanket