Really like the idea of this simple little game, but three players is a little limiting, to be able to extend to 2, 4 and 5 - even 6 would be great.
I wondered if the following might allow this.
2P - play with a dummy hand - you can take cards from that 'player' but they complete no tricks and the previous player chooses which card to swap with the dummy prop.
4P - add 1 carrot - add one lettuce
- add 1 "A bunch of carrots" - add 1 "The vegetable patch"
5P - add 1 Hat - Add on The rabbit
- add 1 "The hat trick" - add 1 "The slightly easier Hat trick"
6P - Easy to use a double set of cards, but I was thinking of add 1 carrot - add 1 "the other Rabbit"
- add 1 "A pair of rabbits" - add 1 "The vegetable hat trick"
Just a thought!