Live Frugally and you will never be bored…
This one is learnt from ex MIL - cut up Christmas cards into gift tags for next year. I have done this for over 10 years, using crimping scissors for funky edges.
Keep a gherkin jar for DIY sauerkraut. Much cheaper than shop bought but also not pasteurised to keep the goodness.
Open all packages in plastic bags carefully and re-use for bathroom bin liners..