• Gather raspberries.
• Put raspberries in mouth.
• Repeat.

Make a berry trifle. Layers of angel food cake, berries (you can sugar them first if you wish), and whipped cream. Yummy!

Could you dehydrate them and later use them in oatmeal or cereals?

Also, try home made fruit roll ups. They're absolutely delicious and very easy to make

I do this with strawberries and blueberries, should work with raspberries too. I freeze them (or buy them frozen off season), put them in a blender and put in some lemon juice. The result is basically a citrusy berry slushy/ice cream replacement. I don't purchase ice cream anymore I do this instead.

You can also get in the rabbit hole of homebrewing. I store lots of fruits in liquid form my home made cider is good after about year in bottles.

Make a raspberry shrub!

There are countless variances to how you can prepare it, just search for shrub recipes and substitute raspberries in for whatever other berry/fruit may be specified. Use honey instead of sugar, infuse your vinegar with herbs, change up the type of vinegar used, let the mixtures sit for longer, taste your results and tweak to your preference. Serve over ice with sparkling water or mix in a spirit.

Wash them, let them dry, separate in portions, freeze them. They are good to consume for many weeks. Then, whenever you feel like it, take one out, drop it (frozen) in the blender with greek yogurt, blend and you have a delicious yogurt with great color and flavor. I do this not only with berries (strawberries a personal favorite), but pretty much with every type of fruit I like and I either got too much or is going out of season (well, not grapes or similar fruit).

Raspberry vinaigrette