Why not organise an event to support the work of Tong-Len.  Although the cost of running the hostels and providing for the children including their costs of attending school are largely covered through child sponsorship, Tong-Len relies on other donations for all its other work, including the work in the tuition tents and the health work in the slum camps.  Tong-Len supporters worldwide also enabled the building of the hostel complex and other capital projects (provision of water supply, solar lighting and heating etc).

If you are interested in raising money for Tong-Len through an event, you may like to see examples of previous events, many of which used online fundraising platforms such as Just Giving.

https://www.justgiving.com/Ailis-Watt/

https://www.justgiving.com/halftheworldbikeride/

https://www.justgiving.com/John-Stewart12/