Hi dear son, i celebrated for my boy last 2 yrs but skipped for tis yr
i ordered 3kg cake but was too much, i tink 1.5kg shb be enuf for the kids & teachers.
Then buy some gifts for the kids for your boy to distribute to them.
Usually the gifts they received were stationeries & tit-bits nicely wrap in packets. Last yr i bot wallets for the kids.
Budget about $1-$3 per child bah depending on the class size
Total spend about $150, becoz of my cake. If you get 1.5kg think below $100 should be able to do it