This is not a really a usual dare but I really like the idea, thatīs why i post this nonetheless:
Everybody willing to participate chooses some amount of money to save at the end of every month for sex toys. Once a decent/ desired amount of money is saved, the person is going to start a poll on getdare with (at least) 3 sex toys and the community can decide which toy wins and is bought.
Dares involving the toy can of course be posted as well.
I am aware that it could take some while to get the desired amount of money, but saveing money canīt be that bad. ;D