I can't believe I'm worrying over this, humour me.
When DC were young I used to do Easter bags with a small hollow egg, some other Easter sweets like mini eggs, a book and something to wear.
As they've got to teens and now young adults I just give them what I consider a "normal" Easter Egg, £5/6 in the supermarket.
This year I'm also buying for DS's GF and find the huge array of options, even in the supermarket, ridiculously stressful. My £5 Egg seems normal to me, it's only a token gift, but in other families would that seem tight?