You can simply turn your head lamp to a lantern. Fill up a white gallon with water and strap your head lamp around the gallon pointing the lamp towards it. You can get sufficient light to fill your tent with bright light.
Buy the strike-anywhere matches to avoid the last hour rush. Do not forget to paste sandpaper on the back of the match holder.
Small items like spices, salt, pepper can be stored in used tic-tack boxes. If possible, label them to minimize chances of confusion.
Instead of investing on a single sleeping bag, try buying a double one. If you are going with family or a group this two-person sleeping bag would be really of great help.
Divide a long candle in two parts and fix them inserting some sticks. It will add some zing in your dinner session arranged inside the camp. It will be better if you can use colorful candles for this.
Use vegetable peeler to slice up small pieces of soap from a bar. These slices can be used one time and would maintain hygiene inside your camp.
Add bundles of sage to campfire to keep mosquitoes away. In forest, neither your All Out Machine would work nor anti-mosquito cream.
While camping try carrying lighter yet effective things. Microfiber towels are really very lightweight and they are super absorbent.
It's always advisable to carry a first aid box while embarking on an adventure trip. But, instead of carrying one heavy box, one can use the old prescription bottle or Altoids tins. You can also carry different medicines in different bottle to use the medicines easily.