how about a rocker/bouncer thingy? some of those can be quite substantial. or a really nice quality woollen/patchwork blanket/quilt for bassinet/cot. a nice handmade one would be pricey, suitable for a combined gift.
or a fancy baby playmat?
or a collection of traditional story books/nursery rhymes. you can get some lovely sets that would be keepsake items.
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