Digital camera as a gift sounds good idea. Tyroid Shots- no need as our "Aayo Noon" is full of iodine. Don't worry, govenment has at least take care of "GOITER" agenda for the time being. Malaria tablets to toddler sounds invalid as mosquitoes become resistant to anti malaria drugs, so no effect on those recombinant mosquitoes of Nepal. Rather you should buy mosquito nets there for which you need enough fund to cover your travel and living expenses. Money- Bhanincha Sunako thailaa haatha ka maila- it depends! If you are travelling with a family then think about it. Try not to carry cash with you, esp US Dollars. Debit card works perfectly fine in any ATM machine (I only have experience within Kathmandu, not sure about the out of valley). Last but not the least, enjoy your Trip Chameli number 2.