The wild animal park near Dalton is worth a visit (about half an hour form Grange), as is the Black Dog just down the road from it for good beer and food.
Ulverston for a walk up to the Hoad or just a general wander around, Dock Museum in Barrow, nice beach at Roan head with ace views back over the lake district, or a walk up Black Combe. Oh, Furness Abbey is worth a look too.
As above, Hampsfell is worth a walk up if it’s decent weather. Not much to do in Grange really, Cartmel is nice and worth a wander round although it’s a shadow of it’s former self, now mainly populated by offcomers! The church is well worth a look though. Apparently L’Enclume and Rogans other food place are very good.
Shame you wont have your bike!