Wheelchair Armrest Pets. Another cool gift for a child who uses a wheelchair is wUnderGlow, the fun wheelchair light makes the wheelchair user more visible at night, for improved night time safety. Or it can adds a bit of fun by giving a cool "underglow effect" to the wheelchair as seen in the video below:
In addition, there are a variety of wheelchair toys on the market, such as Doll named Beckie, who is essentially a Barbie Doll in a wheelchair.
If none of those ideas work for you, check out these gift ideas for wheelchair users.