Splugenpass (Passo di Spluga?) if you fancy a quite big esoteric climb, maybe skip a few kms with the car or ferry, else it will be a huge day to do a round trip from Como. The road on the Italian side has some quite characterful sections. There is a small town just before the top where you might get lunch. But, when we drove over last september it was a pretty desolate seeming spot, so definitely worth checking carefully that both road and cafes are open before going up there.
Splugenpass (Passo di Spluga?) if you fancy a quite big esoteric climb, maybe skip a few kms with the car or ferry, else it will be a huge day to do a round trip from Como. The road on the Italian side has some quite characterful sections. There is a small town just before the top where you might get lunch. But, when we drove over last september it was a pretty desolate seeming spot, so definitely worth checking carefully that both road and cafes are open before going up there.