When I feel that way I start to do something I know I do not want to do and suddenly I can think of a lot of things I'd rather do
I sometimes think of/write about opposites; when I get tired of to-do lists, I make to-don't lists. You can be bored anywhere so why not do something you wish would get done but don't want to do (like clean up my front bedroom for me :-) I always have projects started or things I "wish" would happen, etc. and sometimes I even get interested in them again just by doing some of the preliminary/easy/boring work of them.