You can freeze lemon curd after it's made. It makes a great filling for fancy cakes. I also like to swirl it through cheesecake.
My grandmother used to use egg whites for homemade angelfood cake and the egg yokes for pound cake.
Here is what i think is her recipe for a pound cake baked in a loaf pan:
Loaf o' Gold Cake
2 1/4 cups cake flour or 1 3/4 cups regular flour (sifted or measured by dip-level-pour method)
1 cup sugar
2 tsp. baking powder
1 tsp. salt
1/2 cup soft shortening (half butter)
1 tsp. vanilla extract
5 egg yolks (3/4 cup) unbeaten
3/4 cup milk
Heat oven to 350 degrees (mod.) Grease and line with parchment paper a loaf pan 9x5x3. Blend dry ingredients in bowl. Add shortening, vanilla egg yolks and 1/2 cup of the milk. (If using regular flour, add all milk at once). Beat 2 min. medium speed on mixer or 300 vigorous strokes by hand. Scrape sides ande bottom of bowl constantly. Add rest of milk. Beat 2 more minutes, scraping bowl frequently. Spoon batter into pan. Bake 60-70 minutes. Gool and finish with an orange glaze of 1/2 cup orange juice, 1/2 tsp. grated orange peel, and 1 cup sifted confectioners' sugar mixed and let to stand on top of the oven while cake bakes. When cake is baked and removed from oven, punch holes in the top surface with a fork. Pour on warm glaze a little at a time, over the top.
Another idea is Pot de creme au Chocolat, simple custard (it can be served with fresh fruit), homemade ice cream and Bavarian Cream desserts.