IRS rule for Noncash donations of less than $250 multiple donations?

Sorry, not sure how I missed the non-cash part. The link will answer your question. Part of it is that you need to get the receipt. It doesn't matter if each item donated does not have an amount listed.

"eductions of Less Than $250

If you make any noncash contribution, you must get and keep a receipt from the charitable organization showing:

The name of the charitable organization,

The date and location of the charitable contribution, and

A reasonably detailed description of the property.

A letter or other written communication from the charitable organization acknowledging receipt of the contribution and containing the information in (1), (2), and (3) will serve as a receipt.

You are not required to have a receipt where it is impractical to get one (for example, if you leave property at a charity's unattended drop site).

Additional records. You must also keep reliable written records for each item of donated property. Your written records must include the following information.
The name and address of the organization to which you contributed.

The date and location of the contribution.

A description of the property in detail reasonable under the circumstances. For a security, keep the name of the issuer, the type of security, and whether it is regularly traded on a stock exchange or in an over-the-counter market.

The fair market value of the property at the time of the contribution and how you figured the fair market value. If it was determined by appraisal, you should also keep a copy of the signed appraisal.

The cost or other basis of the property if you must reduce its fair market value by appreciation. Your records should also include the amount of the reduction and how you figured it. If you choose the 50% limit instead of the special 30% limit on certain capital gain property (discussed under Capital gain property election , earlier), you must keep a record showing the years for which you made the choice, contributions for the current year to which the choice applies, and carryovers from preceding years to which the choice applies.

The amount you claim as a deduction for the tax year as a result of the contribution, if you contribute less than your entire interest in the property during the tax year. Your records must include the amount you claimed as a deduction in any earlier years for contributions of other interests in this property. They must also include the name and address of each organization to which you contributed the other interests, the place where any such tangible property is located or kept, and the name of any person in possession of the property, other than the organization to which you contributed.

The terms of any conditions attached to the gift of property."