You were adopted by a family of Gnomes.   As such, you struggled to fit in, much like the story of the Ugly Duckling. 

Note, Gnomes can not take this background

Skill Proficiencies: Any two from:  Arcana, Investigation, and Nature

Languages: Gnomish

Equipment:  A hooded lantern with 5 flasks of oil, a gnomish clockwork fire starter, a vial of acid,  a set of travelers's clothes,  an abacus,  a block and tackle, 50 ft of rope and 10 gp.

Suggested Characteristics

d8

1:   You are the kind of vibrant, enthusiastic person that annoys some people.  You are outgoing, always have questions and constantly are inviting people to do things.

2:    You are used to people talking over you and have a tendency to stay quiet

3:  You are very curious.

4:  You are fascinated by gnomish clockwork devices and similar things..

5:  You love illusions, particularly pretty ones.  Common street performers using Minor Illusion entrance you.

6: You love music and dancing.

7:  You think getting other people's names right is very important.  For hard ones, you right them down and ask to be sure you are spelling it correctly. 

8:  You love pranks.