Maybe get toys that he will enjoy more when he was a little older.
Minipose is five months and likes:
Lamaze toys, these are a big hit and have been for a few weeks now.
Sophie the Giraffe, expensive but worth every penny.
Taggie ball with a bell in in, he is playing with that right now.
Cloth books we have some mainly black and white ones we got from Amazon and he loves the crinkly pages. They have been a big hit since he was old enough to take an interest in toys.
Cot toys are great as well, he loves batting them around. He also has a Fisher Price Kick and Play piano which is annoying to me but he loves.
With regard to big things, he only tolerated the swing when he was a very new baby by the time he was about two months old it was his bouncy chair he wanted to be in (although his swing was great while it lasted). More recently he has started to love his doorway bouncer. There are also these brilliant tummy time playmats (type tummy time in to Amazon). Had I seen those when he was young enough to get more use out of it I definatly would have got one. A playmat is nice too.
As for sentimental things you could choose a story book you loved as a child and put a sweet message in, get a my first Christmas bauble/ stocking/ photoframe/ teddy bear, pick out a lovely 1st Christmas outfit.
There is still lots that can be just from you.
