Stamp Mission My Sekai Cost-Effective Strategy

My Sekai Stamp Mission, gather here if you're seeing hell! Actually, there's a trick. Let me explain the mechanics. It counts as 1 when a gatherable object in My Sekai is depleted after gathering. So, getting about 5 items by consuming 1 Life from a tree is the same as getting 1 item by consuming 0.1 from a flower, both counting as 1. If you gather something like 'Amatsuyu' from the Haruichi event, the efficiency gets considerably worse. The trick is to collect as many flowers and toolboxes as possible in both the morning and afternoon. Sunny days are your chance. Don't miss them. By the way, Unlimited can only be achieved by breaking Life or stones. However, you can achieve it by breaking 2-3 Large Lives a day, so let's keep at it steadily!