It does take some money to build or rotate a survival kit.
But, it doesn’t take any money to gather what you have.

Start with what you have. Gather it together into a plastic trash bag or pillow case. Work from there.

It doesn’t take money to plan.
Make a list of what you need.
Take the time to sort it with most critical on top. Then, when you have the opportunity to work on it, start at the top.

It doesn’t take money to store water.
Ask a friend or neighbor for their old, empty two liter bottles.
Clean them thoroughly and fill with water at the tap or a drinking fountain.
You can live without almost everything else, but you NEED water. Find a way to store water. A gallon of drinking water is usually around a dollar. If you have little or no money, buy this before you buy anything unnecessary like candy, entertainment, etc.

It doesn’t take money to volunteer.
Sometimes you can work with a church or community group to earn what you need by helping others. Volunteer to collect items from the group for those that don’t have what they need. Make sure that leaders understand your need and your willingness to help others in the same predicament. Work hard to help others obtain what they need and when it is completed, you may be welcome to a share or the surplus. Take care to have the utmost honor so that you are working out a win/win plan and not a self-centered activity. It could be someone in your group is moving and would love to trade you food they don’t want to pack for help with packing and cleaning, etc.
It could be an elderly member has plenty to spare but needs help with yard or house work, etc. If you have time and energy, find creative ways to work for what you need.

It doesn’t take money to ask for help.
Talk to church or community leaders about how to obtain assistance. Food pantries, and other group and community projects may already be in place to help you. Find out what you need to know so that you can help your family be prepared. If nothing is available, see if you could work with them to create a solution for yourself and others. (see volunteering)

It doesn’t take money to have patience.
If we have done all we can, we can pray, trust God, and watch and wait for divine assistance. Ultimately, we can not be prepared for all unknowns anyway. The goal is to do literally the best we can with the circumstances we’ve been given and then trust God. Use prayer to guide you to help improve your circumstances. Often if our finances are so tight we have nothing to prepare with, we are already in survival mode.

Remember this time of financial scarcity when next your situation is better, and prepare before you spend your money on non-necessities. When your are thriving, save money and prepare for emergencies.