I'd like to start a list of at least 101 things you can practice in the pool.
1. Remove weight belt
2. Replace weight belt
3. Remove mask
4. Swim without mask
5. Replace mask
6. Fin backwards
7. Hover in bud a position
8. Hover horizontal
9. Remove bc
10. Replace bc
11. Buddy breathing
12. Panicked diver rescue
13. Unconscious diver from depth
14. Helicopter turns
15. no mask swim
16. Buddy breathing swim
17. No mask air share swim
18 Hover inverted
19 Hover upside down
20 Regulator recovering
21 Frog kick
22 Modified frog kick
23 Breathing
24 Communications
25 Awareness
26 Kicking with one fin
27 Kicking with no fins
28 Tying knots
29 Deploy a DSMB
30 Use a lift bag
31 Take photos
32 Proper weighting
33 Dof and don
34 Rescue breaths
35 Blowing up a balloon
36 Unlocking a lock
37 Brushing your teeth
38 Forwards rolls
39 backwards rolls
40 search patterns
41 Breathe off your bc inflator for half an hour while maintaining neutral bouyancy.
42 take the tank off your bcd and swim around with your tank under one arm breathing of the reg while maintaining neutral buoyancy
43 get a big group of 6 or so divers sharing one regulator & maintaining neutral buoyancy
44 bare tank breathing.
45 MFS ditch and don
46 scuba bailouts
47 Back kick
48 Line drills (w/ anchors)
49 Oral B.C inflation on surface
50 Gaint leap entry
51 Inflation of SMB
52 Byouancy controle