The Golden Egg, 210 Crain Hwy. S., Route 3, (P.O. Box 59), Millersville, Md. 21108. Catalog $2, supplement $1. Open Monday through Friday 9 a.m. to 5 p.m., Saturday 10 a.m. to 1:30 p.m. 301/987-5150.

After years of dipping hard-cooked eggs into watery dyes for Easter, you may be ready to go on to bigger productions. There are, after all, Fabergestyle eggs encrusted with jewels, decoupaged eggs, even hinged eggs lined with satin and inset with landscapes. Of course, such fancy eggs usually start with geese or ostriches or emus rather than chickens. You can get these exotic eggs from a shop in Millersville, Maryland, known as the Golden Egg. As one night guess, they cost a good bit, from sixty-five cents to $15 just for the cleaned shell. The Golden Egg will also sell the tools and material to elaborate them, the hingers, flat-back jewels, braid and pedestals that turn them into treasures. They will teach you what to do with your eggs, either through the instructions in their catalog or by free lessons when you buy a set of tools in the shop. And if you are the clumsy sort, you might find it more realistic to buy their already-decorated eggs. Egging, according to the staff, is a lot of fun, "if you have lots of time." With total sets starting at $16.50 and finished eggs selling for up to $100, we might add, "if you have lots of money."