Do you have any hobby ideas?

You can try playing video games, have pets, idk

baking, arts and crafts, nail decorating, makeup/styling...these are just a few of mine

do you like to sit and focus on something?
Knitting, crochet, or embroidery are all great craft ideas that do not take a large investment to learn or practice.
Candle making can be a larger upfront investment, wax, molds, colors etc but you are typically standing and moving around while you create.  Or purchasing plain candles and decorating them is another option.  Check out places like the pottery barn for ideas then make a trip to the locol discount store for items.
Beading is also enjoyable.  You can create something fairly inexpensivaly if you have an idea and an eye for sales.
Painting christmas ornaments is very interesting if you want something you can sit and do for a while then leave alone for a while. Michaels has small plaster ornaments that are inexpensive and you can get acryilc paints at Walmart for less then $1 each.
Otherwise, try your hand at cardmaking using things you can get at the $1 store.  
Or  do a search for crafting using recycled or repurposed items.  Look around your home and see what you have that you can create with.  You can even make furniture out of an old garden hose!

Good luck