A tennis ball is the most available practice ball in cricket — and a good coach, if you use it honestly. It teaches watching, timing and shot shape brilliantly; it lies about bounce, pace off the pitch and edges. The rule that makes soft-ball practice transfer: play every ball as if it could hurt you — full technique, real footwork, no baseball swings.
Bounce reading: tennis balls sit up off a length that would keep a hard ball at shin height — never learn length from a tennis ball alone.
Edges and hard hands: a soft-ball edge goes nowhere, so it never punishes pushing hard at the ball. Keep the soft hands discipline deliberately, because the ball won't enforce it.
Fear: courage in front of a hard short ball is its own skill; the swivel SHAPE grooved with a tennis ball gives you something to be brave WITH.
Only if you bat like it's a tennis ball. Cross-bat heaves that clear a compound wall become catches with a hard ball. Practised with full technique, soft-ball reps build watching, timing and shot shape — most subcontinental greats grew up on exactly that.
Electrical tape makes the ball heavier, faster and skiddier — it swings, keeps lower, and arrives quicker off the pitch. Tape-ball is the best soft-ball approximation of real pace; plain tennis ball is better for slow grooving work.
The wall rebound and one-hand drills work in any garage or hallway with about four big steps of space. Keep full swings for outside; indoors, bias to defence and checked drives.
Sticks works anywhere you can swing a bat — at the nets, or at home with nobody bowling. It watches through your phone and speaks this kind of coaching out loud, one focus per shot — in English or Hindi. Video never leaves your phone, and it's free while Sticks is in beta.