Free seeds

I was wondering if those free seed packets that are given away with magazines are worth planting? If they are, would I be able to keep the ones I have until next spring (when I'll be equipped to have a wee go at potting things) and if so, how should I store them.
This is what I've accumulated so far that I would maybe give space to.
Honesty 'Lunaria Annua purple'
Gypsophila 'Covent Garden'
Cosmos 'Cosmix White'
Agrostema 'Ocean Pearl'
Larkspur 'Qis White'
I've got a few other packets but they are mostly white and ideally I'd like my border to have mostly purples, blues and reds with little bits of white to 'pop' against the dark oak fence paint here and there (if I can!).
All ideas and no talent me.
Again, any advice is appreciated.
This is what I've accumulated so far that I would maybe give space to.
Honesty 'Lunaria Annua purple'
Gypsophila 'Covent Garden'
Cosmos 'Cosmix White'
Agrostema 'Ocean Pearl'
Larkspur 'Qis White'
I've got a few other packets but they are mostly white and ideally I'd like my border to have mostly purples, blues and reds with little bits of white to 'pop' against the dark oak fence paint here and there (if I can!).
All ideas and no talent me.

Again, any advice is appreciated.
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The fridge sounds like an idea. I'll pop 'em in there. Thanks.
This is last summer. Cosmos, Zinnia, stocks, sweet William, calendula, sweet peas, rudbeckia, scabious all free seeds, or past sell by dates.
Fresh is obviously better but keep them sealed and pop them in the fridge, as said before, and sow them when you can. Nothing to lose but a couple of handfuls of compost.