...Donating the $100 from your own pocket; or 

...Finding 10 others to donate $10, or 20 to donate $5, or 100 to donate $1; or 

...Cutting back on your coffee. $100 a month is roughly $3.30 a day which is actually less than a coffee; or 

...Pack a lunch from home. Or generally purchasing less from cafes. Skip the cake, or sides, spread out over the month it will add up; or  

...Cut back on/substitute ingredients in your cooking for cheaper options; or 

...Hold a bake/craft stall; or 

...Tin rattle; or 

...Pick up some extra work; or 

...Start a rival lasagna business; or 

...Hold a movie night/music event/afternoon tea at your house; or 

...Tell us your brilliant idea!