Sensory area and weighted blanket

I am currently fostering an 18 month old who is emotionally delayed and has attachment issues due to neglect and abuse, over the past couple of weeks she has had rage-like emotional processing fits to cope with surfacing feelings.  My DW bought an infant toy for her, a doll with different textures on it's dress, crinkle sounds in it's skirt, and a rattle, the doll seems to help her keep calm when she is overwhelmed outside of the house.

I am interested in putting together some kind of sensory space for her (not a whole room but maybe a portion of her room/or a sensory table) but I'm not sure what to put in it.  What are some sensory objects that you use?

She also calms down more efficiently when I lay her in the crib with a few thick blankets on her but this always ends with her drenched in sweat.  I'm thinking a weighted blanket would work well for her but would prefer to make one vs. buying one.  Is there a tutorial that anyone can recommend?